CN210062255U - Cover film for silage storage - Google Patents
Cover film for silage storage Download PDFInfo
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- CN210062255U CN210062255U CN201920181541.7U CN201920181541U CN210062255U CN 210062255 U CN210062255 U CN 210062255U CN 201920181541 U CN201920181541 U CN 201920181541U CN 210062255 U CN210062255 U CN 210062255U
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Abstract
The utility model relates to a plastic film technical field especially relates to a silage stores and uses cover membrane, include by outer waterproof dustproof layer, first oxygen layer, second oxygen layer and biodegradable dampproof course that hinder that is equipped with in proper order to interior. The utility model provides a cover membrane product have better oxygen effect, environmental protection more and retrieve the convenience.
Description
Technical Field
The utility model relates to a plastic film technical field especially relates to an silage is stored with covering membrane.
Background
The process of grass ensiling is essentially the anaerobic fermentation process of lactic acid bacteria, and the key to the success of grass ensiling is the maximum oxygen isolation. If air seeps into the silage, the forage grass is decayed due to the propagation of yeast, mould and other harmful bacteria, toxic and harmful substances are generated, the temperature, humidity and pH value balance of the silage is damaged, and the dry matter and nutrients of the silage are greatly lost.
At present, the ensilage is mostly stored in a ensilage cellar or stored in a stack during ensilage in China, the ensilage is filled into a cellar pit or stacked, mechanically compacted and then tightly sealed by a thicker common polyethylene black-white plastic film, the upper part of the ensilage pit is covered with waste tires or steel rings for compaction, and the PE film sealing has the defect of poor oxygen resistance and can not effectively maintain the anaerobic environment. At present, the domestic silage is characterized in that a single-layer oxygen-blocking film material is laid on an inner layer firstly, then a polyethylene film is laid, but the inner layer is contacted with the silage material, the oxygen-blocking materials such as ethylene vinyl alcohol copolymer and the like have obvious attenuation of blocking capability under the influence of environmental humidity, the quality of the silage is not obviously improved, and the materials are not easy to recover.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the defects of the prior art, the cover film for silage storage has good oxygen blocking effect, is more environment-friendly and is convenient to recycle.
In order to solve the technical problem, the technical scheme of the utility model is that:
a cover film for silage storage comprises a waterproof dustproof layer, a first oxygen-resistant layer, a second oxygen-resistant layer and a biodegradable moistureproof layer which are sequentially arranged from outside to inside.
As an improved technical scheme, the waterproof dustproof layer is a dustproof additive and polyethylene composite waterproof dustproof layer formed by polyethylene and the dustproof additive.
As an improved technical scheme, the first oxygen barrier layer is a PA6 layer or a PA66 layer.
As an improved technical scheme, the second oxygen barrier layer is a PET layer.
As an improved technical scheme, the biodegradable layer is a PBAT layer.
As an improved technical scheme, no bonding layer is arranged between the waterproof dustproof layer and the first oxygen barrier layer, between the first oxygen barrier layer and the second oxygen barrier layer and between the second oxygen barrier layer and the biodegradable moistureproof layer.
As an improved technical scheme, the total thickness of the waterproof dustproof layer, the first oxygen-blocking layer, the second oxygen-blocking layer and the biodegradable moistureproof layer is 100-150 microns, and the thickness ratio of the waterproof dustproof layer to the first oxygen-blocking layer to the second oxygen-blocking layer to the biodegradable moistureproof layer is 4:2:2: 1.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the cover film for silage processing comprises a waterproof dustproof layer, a first oxygen-resistant layer, a second oxygen-resistant layer and a biodegradable moistureproof layer which are sequentially arranged from outside to inside. Wherein the waterproof dustproof layer is a dustproof additive and polyethylene composite waterproof dustproof layer formed by polyethylene and the dustproof additive. The functional layer can shield sunlight and keep the temperature and humidity of the silage constant. The first oxygen barrier layer is a PA6 layer or a PA66 layer; the second oxygen barrier layer is a PET layer; by designing two oxygen-blocking layers, the two oxygen-blocking layers have a better oxygen-blocking characteristic under the synergistic effect; the biodegradable layer is a PBAT layer, and the design of the functional layer prevents the phenomenon that the oxygen-blocking effect is weakened after the moisture absorption of the middle oxygen-blocking layer, thereby effectively prolonging the storage period of the feed; the biodegradable moisture-proof layer can be directly treated with manure compost generated in a pasture and can be mixed with silage, and the silage eaten by livestock is not influenced. To sum up, the utility model provides a silage processing is with covering membrane product adopts crowded technology once to accomplish altogether, and four kinds of different functional layers once compound form, conveniently lay and retrieve, both environmental protection improve pasture workman's labor efficiency again. The product has good barrier property, and can be used in fields of silage storage such as pasture silage corn and silage alfalfa, storage in a cellar, and the like.
Drawings
Fig. 1 is a schematic cross-sectional structure view of a cover film for silage storage according to the present invention;
wherein, the coating comprises 1-a waterproof dustproof layer, 2-a first oxygen barrier layer, 3-a second oxygen barrier layer and 4-a biodegradable moisture barrier layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A cover film for silage storage, as shown in figure 1, comprises a waterproof dustproof layer 1 (a dustproof additive and a polyethylene layer formed by polyethylene and the dustproof additive), a first oxygen barrier layer 2 (a PA6 layer or a PA66 layer), a second oxygen barrier layer 3 (a PET layer) and a biodegradable moisture barrier layer 4 (a PBAT layer) which are arranged from outside to inside in sequence.
In the actual production process, the structure of four functional layers, namely a waterproof dustproof layer, a first oxygen-resistant layer, a second oxygen-resistant layer and a biodegradable moisture-proof layer, is subjected to co-extrusion blow molding to form a covering film product, wherein the waterproof dustproof layer has the function of shielding sunlight and keeping the temperature and the humidity of silage constant in actual application. The first oxygen barrier layer and the second oxygen barrier layer are designed to have the characteristics of oxygen barrier and the like in practical application; the design of the biodegradable moisture-proof layer can prevent the phenomenon that the oxygen-blocking effect is weakened after the moisture absorption of the middle oxygen-blocking layer in practical application, and can effectively prolong the storage period of the feed; the biodegradable moisture-proof layer can be directly treated with manure compost generated in a pasture and can be mixed with silage, and the silage eaten by livestock is not influenced.
Wherein, the waterproof dustproof layer and the first oxygen barrier layer, the first oxygen barrier layer and the second oxygen barrier layer and the biodegradable dampproof layer are not provided with bonding layers. And no bonding layer is arranged between each layer, each layer of film can be stripped, and the biodegradable layer can be separated and then composted and degraded, and can also be automatically degraded in the process of covering silage.
Wherein the total thickness of the waterproof and dustproof layer, the first oxygen barrier layer, the second oxygen barrier layer and the biodegradable moisture barrier layer is 100-150 microns, and the thickness ratio of the waterproof and dustproof layer to the first oxygen barrier layer to the second oxygen barrier layer to the biodegradable moisture barrier layer is 4:2:2: 1. In the cover film processing, the cover film product is processed according to the thickness.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A cover film for silage storage is characterized in that: comprises a waterproof dustproof layer, a first oxygen-resistant layer, a second oxygen-resistant layer and a biodegradable moistureproof layer which are arranged from outside to inside in sequence.
2. The cover film for silage storage according to claim 1, wherein: the waterproof dustproof layer is a dustproof additive and polyethylene composite waterproof dustproof layer formed by polyethylene and the dustproof additive.
3. The cover film for silage storage according to claim 1, wherein: the first oxygen barrier layer is a PA6 layer or a PA66 layer.
4. The cover film for silage storage according to claim 1, wherein: the second oxygen barrier layer is a PET layer.
5. The cover film for silage storage according to claim 1, wherein: the biodegradable layer is a PBAT layer.
6. The cover film for silage storage according to claim 1, wherein: and bonding layers are not arranged between the waterproof dustproof layer and the first oxygen barrier layer, between the first oxygen barrier layer and the second oxygen barrier layer and between the second oxygen barrier layer and the biodegradable moistureproof layer.
7. The cover film for silage storage according to claim 1, wherein: the total thickness of the waterproof and dustproof layer, the first oxygen barrier layer, the second oxygen barrier layer and the biodegradable moisture barrier layer is 100-150 microns, and the thickness ratio of the waterproof and dustproof layer to the first oxygen barrier layer to the second oxygen barrier layer to the biodegradable moisture barrier layer is 4:2:2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920181541.7U CN210062255U (en) | 2019-02-01 | 2019-02-01 | Cover film for silage storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920181541.7U CN210062255U (en) | 2019-02-01 | 2019-02-01 | Cover film for silage storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210062255U true CN210062255U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920181541.7U Active CN210062255U (en) | 2019-02-01 | 2019-02-01 | Cover film for silage storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210062255U (en) |
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2019
- 2019-02-01 CN CN201920181541.7U patent/CN210062255U/en active Active
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