CN107738461A - A kind of method that regenerated membrane plastics prepare agricultural mulching - Google Patents
A kind of method that regenerated membrane plastics prepare agricultural mulching Download PDFInfo
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- CN107738461A CN107738461A CN201710998778.XA CN201710998778A CN107738461A CN 107738461 A CN107738461 A CN 107738461A CN 201710998778 A CN201710998778 A CN 201710998778A CN 107738461 A CN107738461 A CN 107738461A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/042—Mixing disintegrated particles or powders with other materials, e.g. with virgin materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0428—Jets of high pressure fluid
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Protection Of Plants (AREA)
Abstract
The invention belongs to the preparing technical field of agricultural mulching, there is provided a kind of method that regenerated membrane plastics prepare agricultural mulching.It is characterized in directly collecting agricultural mulching, the films such as all kinds of packing plastics bags, without removal of impurities, except soil and oil removing, without cleaning, without hot melt, direct in-situ mixes with talcum powder, high pressure compressed is closely knit, then jaw crusher is continued through, airslide disintegrating mill is crushed, isolated by talcum powder, obtain scattered plastic sheeting powder and talcum powder compound, modified straw fiber is further added as connecting framework, make the bed, hot pressing obtains agricultural mulching, its significant advantage is to overcome film impurities to be difficult to remove more, the defects of cost recovery is high, significantly reduce film cost recovery, improve waste plastic film reuse ratio.
Description
Technical field
The invention belongs to the preparing technical field of agricultural mulching, there is provided a kind of regenerated membrane plastics prepare agricultural mulching
Method.
Background technology
Generally, plastics have excellent chemical stability, corrosion resistance, electrical insulating property, thermal insulation, excellent shock-absorbing and disappeared
Sound sound insulation acts on, and with elasticity well, can easy processing shaping Nian Jie with the other materials such as metal, glass, timber well.
But plastics provided for us facilitate while, some negative effects are also caused to environment.Because plastics have corrosion resistant
Lose, be not easily decomposed characteristic, accumulate over a long period simultaneously, had a strong impact on the ecological environment of the earth, while also result in the waste of resource.
The recycling of waste or used plastics is generally taken seriously, about returning as a measure for saving the energy, environmental protection
Utilization ways are received to be continuously developed out.Because the price advantage of regenerated plastics protrudes, benefit is obvious, domestic technics of reclaim of plastic waste
Market has also made good, and not only recovery space is big and good in economic efficiency, and especially bottle class, big part plastic products can be fast
Speed recovery and utilization.However, plastic sheeting is because light, contact debris is mostly silt, grease etc., thus recycle compared with
It is few, huge environmental pollution is caused for this.
Plastic sheeting multidigit agricultural mulching and the white pack of life, are floated everywhere by arbitrarily abandoning, and turn into notorious " white
Color pollutes ".The clearing and retrieving of particularly agripast residual film is very difficult, and the residual quantity of plastics agricultural mulching increases year by year in soil
Add, serious negative effect is brought to agroecological environment and health, agricultural sustainable development is constituted a threat to.It is agricultural
Film mainly has a mulch film and canopy film, and mulch film is mainly PE films, and canopy mould has a PE, PE/EVA, PVC film, in recovery and reusing and recycling, one
As PE and PVC film are made a distinction, agricultural film is typically dirtier, and is often entrained with soil, sandstone, grass roots, iron nail, iron wire etc.,
Remove iron impurities and clean, the method for recycling is mainly granulated, it is necessary to which manual sorting's cleaning, cleaned dried
Useless film directly can produce plastic products, such as basin, bucket, plastics flange etc. with hot-extrusion method.Domestic and international researcher is in plastics
There is multinomial achievement in terms of film recovery, Zou et al. has invented a kind of recovery method of plastic sheeting to reach economic and environment-friendly
The purpose of plastic sheeting is handled, this technical scheme mainly includes precipitation, washing, press filtration and pulverising step.Pass through above step, modeling
Material film, which completes, removes the steps such as impurity, greasy dirt, and by crushing, plastic grain has been made, a large amount of due to containing in its composition
High polymer material, can degrade use, can be as other rubber or the filler of plastic products, recycling.In addition,
The recovery method and device of a kind of soft plastic film from domestic garbage of Xie et al., can mainly be mixed in view of in house refuse
The flexible films such as miscellaneous substantial amounts of preservative film, polybag, these flexible films are different from other plastic products materials, if reclaiming together
It will cause much to perplex；Therefore, be using soft plastic film pliability and its isolation in water, tiling property and
The speciality such as the tack of water, design it is a kind of can effectively, automatically from numerous house refuses, categorised collection goes out soft plastic
The method and device of film.In summary, plastic sheeting impurity is more, recovery difficult is big, recovery quality is low, utilized after recovery by
Limit, meanwhile, it is higher by cost during the recycled plastic films such as cleaning, and sewage is caused to pollute environment.
The content of the invention
The defects of being difficult to recycling for existing plastic sheeting, the present invention propose that a kind of regenerated membrane plastics prepare agriculture
With the method for mulch film.It is characterized in directly collecting the films such as agricultural mulching, all kinds of packing plastics bags, without cleaning, except soil and removes
Oil, without cleaning, without hot melt, direct in-situ mixes with talcum powder, and high pressure compressed is closely knit, then continues through jaw crushing
Machine, airslide disintegrating mill are crushed, and are isolated by talcum powder, are obtained scattered plastic sheeting powder and talcum powder compound, are entered
One step adds modified straw fiber as connecting framework, makes the bed, hot pressing obtains agricultural mulching, and its significant advantage is to overcome film
The defects of impurity is difficult to remove more, cost recovery is high, film cost recovery is significantly reduced, it is sharp again to improve waste plastic film
With rate.
The method that a kind of in-situ regeneration plastic film of the present invention prepares agricultural mulching, can solve plastic sheeting recovery difficult
Greatly, reclaim quality is low, after recovery using the shortcomings of limited, cost recovery is high, meanwhile, without cleaning, except soil and oil removing, without
Cleaning, without hot melt, preparation process is relatively simple, and energy consumption is low, and cost is low, is suitable for large-scale promotion.
To achieve the above object, concrete technical scheme of the present invention is as follows：
A kind of method that regenerated membrane plastics prepare agricultural mulching, it is characterized in mixing waste plastic film with talcum powder, high pressure
Compression compact, particle is broken for using jaw crusher, then uses airslide disintegrating mill to crush to be powdered；Further add and be modified
Stalk fibre is made the bed, hot pressing obtains agricultural mulching as connecting framework；What is prepared comprises the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：10-15 is mixed
Uniformly, and in compressor closely knit bulk is compressed it into；Then it is bulky grain to be crushed using jaw crusher, is further used
Airslide disintegrating mill crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:3-8 is well mixed, so
After continuously made the bed, rationally control its tile thickness and uniformity, precompressed carried out using roller, further continues through hot pressing
Roller carries out hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching using stalk fibre as skeleton.
Preferably, step（1）The power of the jaw crusher is 10 ~ 30kW, and intake port is 200 ~ 400mm, is gone out
Material mouth diameter can be adjusted in 10 ~ 30mm.
Preferably, step（1）The airslide disintegrating mill is to spray formula airflow milling or circulating tube type airflow milling.
Preferably, step（1）The air pressure of the air-flow crushing is 0.7 ~ 0.85MPa.
Preferably, step（2）The thickness of making the bed is 0.5 ~ 1.0mm；
Preferably, step（2）The hot pressing temperature of the hot-pressing roller is 110 ~ 140 DEG C.
In the present invention, talcum powder plays three effects：On the one hand auxiliary granulation is played, twines waste film parcel
There is certain hardness and intensity after talcum powder, compression compact, be easy to broken granulation and be ground into powder；On the other hand play every
From effect, plastic sheeting powder is uniformly dispersed, heat during hot pressing, be connected with each other again during cooling；The third aspect plays
Film performance improvement is acted on, and in the film article of shaping, talcum powder is scattered between plastic molecules, plays humidification.Cause
This, the addition of talcum powder should be controlled rationally, and should ensure that being well mixed for talcum powder and waste plastic film before compression compact.
When being crushed in jaw crusher, should try one's best makes the grain diameter after crushing smaller, to be advisable less than 5mm, to ensure air-flow powder
The charging of broken machine is unobstructed and crushing effect.The air-flow crushing principles of action select spray formula airflow milling or circulating tube type airflow milling, pass through control
Gas pressure, gas consumption, crushing acc power and grinding time processed, realize that the particle diameter of the mixed-powder after crushing is less than 100 μm.
Because waste or used plastics loss of strength is serious, in order to more preferably make waste or used plastics film forming again in making the bed, employ
Modified straw fiber is connecting framework, and it not only has cementability, and with certain bright effect so that precompressed after making the bed
When be bonded the blank to form film, the farm-oriented mulch of preferable intensity is formed in hot pressing.First precompressed is answered before powdering hot pressing, to improve
The surface smoothness of bisque, the film thickness suppressed are more uniformly distributed, and prevent the appearance in cavity.
More preferably, the regeneration farm-oriented mulch that the present invention obtains can efflorescence be automatically fine powder after water conservation, soil moisture conservation is completed, no
Soil can be damaged.
The invention provides a kind of method that regenerated membrane plastics prepare agricultural mulching, and compared with prior art, it is protruded
The characteristics of and excellent effect be：
1. the preparation method of the present invention, without to the removal of impurities of the plastic sheeting of recovery, except soil and oil removing, without cleaning, without heat
It is molten, preparation regeneration farm-oriented mulch is directly used in, technical process is simplified, and greatly reduces energy consumption, is that waste or used plastics are thin
The recycling of film provides efficient utilization ways.
2. the farm-oriented mulch that the preparation method of the present invention obtains meets soil water-retaining, the needs of soil moisture conservation, can be automatic after use
Efflorescence is fine powder, and soil will not be damaged.
3. the preparation method of the present invention, the recovery utilization rate of plastic sheeting is improved, production efficiency is high, automaticity
Height, waste film is handled available for scale.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：10 mixing are equal
It is even, and closely knit bulk is compressed it into compressor；Then using jaw crusher crush be bulky grain, further use pair
Spray formula airflow milling crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:3 is well mixed, then
Continuously made the bed, thickness of making the bed is 0.5mm, carries out precompressed using roller, further continues through hot-pressing roller, hot pressing temperature is
140 DEG C of progress hot pressing, the melting of powder-mixed powder connect to form regeneration agricultural mulching using stalk fibre as skeleton.
The regeneration agricultural mulching obtained to embodiment 1, tests its thickness, tensile strength and light transmittance, and obtained data are such as
Shown in table 1.It can be seen that：Regeneration agricultural mulching produced by the present invention, its internal talcum powder, stalk fibre serve good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 2
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：12 mixing are equal
It is even, and closely knit bulk is compressed it into compressor；Then using jaw crusher crush be bulky grain, further use pair
Spray formula airflow milling crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:5 is well mixed, then
Continuously made the bed, thickness of making the bed is 0.8mm, carries out precompressed using roller, further continues through hot-pressing roller, hot pressing temperature is
120 DEG C of progress hot pressing, the melting of powder-mixed powder connect to form regeneration agricultural mulching using stalk fibre as skeleton.
The regeneration agricultural mulching obtained to embodiment 2, tests its thickness, tensile strength and light transmittance, and obtained data are such as
Shown in table 1.It can be seen that：Regeneration agricultural mulching produced by the present invention, its internal talcum powder, stalk fibre serve good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 3
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：15 mixing are equal
It is even, and closely knit bulk is compressed it into compressor；Then it is bulky grain to be crushed using jaw crusher, further uses and follows
Annular tube type airflow milling crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:5 is well mixed, then
Continuously made the bed, thickness of making the bed is 1.0mm, carries out precompressed using roller, further continues through hot-pressing roller, hot pressing temperature is
110 DEG C of progress hot pressing, the melting of powder-mixed powder connect to form regeneration agricultural mulching using stalk fibre as skeleton.
The regeneration agricultural mulching obtained to embodiment 3, tests its thickness, tensile strength and light transmittance, and obtained data are such as
Shown in table 1.It can be seen that：Regeneration agricultural mulching produced by the present invention, its internal talcum powder, stalk fibre serve good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 4
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：15 mixing are equal
It is even, and closely knit bulk is compressed it into compressor；Then using jaw crusher crush be bulky grain, further use pair
Spray formula airflow milling crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:8 is well mixed, then
Continuously made the bed, thickness of making the bed is 0.5mm, carries out precompressed using roller, further continues through hot-pressing roller, hot pressing temperature is
130 DEG C of progress hot pressing, the melting of powder-mixed powder connect to form regeneration agricultural mulching using stalk fibre as skeleton.
The regeneration agricultural mulching obtained to embodiment 4, tests its thickness, tensile strength and light transmittance, and obtained data are such as
Shown in table 1.It can be seen that：Regeneration agricultural mulching produced by the present invention, its internal talcum powder, stalk fibre serve good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 5
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：10 mixing are equal
It is even, and closely knit bulk is compressed it into compressor；Then it is bulky grain to be crushed using jaw crusher, further uses and follows
Annular tube type airflow milling crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:8 is well mixed, then
Continuously made the bed, thickness of making the bed is 1.0mm, carries out precompressed using roller, further continues through hot-pressing roller, hot pressing temperature is
140 DEG C of progress hot pressing, the melting of powder-mixed powder connect to form regeneration agricultural mulching using stalk fibre as skeleton.
The regeneration agricultural mulching obtained to embodiment 5, tests its thickness, tensile strength and light transmittance, and obtained data are such as
Shown in table 1.It can be seen that：Regeneration agricultural mulching produced by the present invention, its internal talcum powder, stalk fibre serve good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Comparative example 1
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, are with batch waste plastic film, with cunning with embodiment 5
Stone flour example 100 in mass ratio：10 is well mixed, and closely knit bulk is compressed it into compressor；Then jaw crushing is utilized
It is bulky grain that machine, which crushes, further uses circulating tube type airflow milling to make bulky grain crushing be that particle diameter is powdered mixed less than 100 μm
Close material；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:8 is well mixed, then
Farm-oriented mulch is prepared in extrusion melting calendering.
The regeneration agricultural mulching that comparative example 1 obtains, tests its thickness, tensile strength and light transmittance, obtained data such as table 1
It is shown.
Comparative example 2
A kind of method that regenerated membrane plastics prepare agricultural mulching, preparation comprise the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, are with batch waste plastic film, with cunning with embodiment 5
Stone flour example 100 in mass ratio：10 is well mixed, and closely knit bulk is compressed it into compressor；Then jaw crushing is utilized
It is bulky grain that machine, which crushes, further uses circulating tube type airflow milling to make bulky grain crushing be that particle diameter is powdered mixed less than 100 μm
Close material；
（2）By step（1）The powder-mixed powder of gained is continuously made the bed, and thickness of making the bed is 1.0mm, is carried out using roller
Precompressed, hot-pressing roller is further continued through, hot pressing temperature is 140 DEG C of progress hot pressing, forms regeneration agricultural mulching.
The regeneration agricultural mulching that comparative example 1 obtains, tests its thickness, tensile strength and light transmittance, obtained data such as table 1
It is shown.
Table 1：
| Specific embodiment | Thickness（mm） | Tensile strength（MPa） | Light transmittance（%） |
| Embodiment 1 | 0.21 | 11.5 | 61 |
| Embodiment 2 | 0.33 | 10.5 | 58 |
| Embodiment 3 | 0.45 | 12.7 | 71 |
| Embodiment 4 | 0.20 | 11.9 | 66 |
| Embodiment 5 | 0.38 | 10.2 | 65 |
| Comparative example 1 | 0.38 | 6.3 | 67 |
| Comparative example 2 | 0.38 | 5.2 | 64 |
By carrying out test and comparison to obtained farm-oriented mulch, after the present invention is by most directly crushing the plastic sheeting of recovery, lead to
Modified straw fiber auxiliary is crossed, makes waste or used plastics film forming again by making the bed, it is connecting framework to employ modified straw fiber, its
Not only there is cementability, and with certain bright effect so that the blank to form film is bonded after making the bed during precompressed, in hot pressing
During form the farm-oriented mulch of preferable intensity.And comparative example 1 is rolled using traditional hot-melt extruded, due to being difficult to ensure that stalk fibre
The enhancement of dimension, obtained film strength are difficult to the requirement for meeting mulch film；Comparative example 2 is not due to using stalk fibre connection bone
Frame, intensity are equally relatively low.Therefore, the present invention has significant advantage, and efficient profit is provided for the recycling of waste plastic film
Use approach.
Claims (6)
1. a kind of method that regenerated membrane plastics prepare agricultural mulching, it is characterized in mixing waste plastic film with talcum powder, it is high
Compression compact is pressed, particle is broken for using jaw crusher, then uses airslide disintegrating mill to crush to be powdered；Further add and change
Property stalk fibre is made the bed, hot pressing obtains agricultural mulching as connecting framework；What is prepared comprises the following steps that：
（1）The waste plastic films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100 in mass ratio：10-15 is mixed
Uniformly, and in compressor closely knit bulk is compressed it into；Then it is bulky grain to be crushed using jaw crusher, is further used
Airslide disintegrating mill crushes bulky grain for powder-mixed material of the particle diameter less than 100 μm；
（2）Stalk fibre is immersed into the waterglass that mass concentration is 25% and soaks 1-2h, is drained, the modified straw moistened is fine
Dimension；
（3）By step（1）The powder-mixed powder of gained is with modified straw fiber with mass ratio 100:3-8 is well mixed, so
After continuously made the bed, rationally control its tile thickness and uniformity, precompressed carried out using roller, further continues through hot pressing
Roller carries out hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching using stalk fibre as skeleton.
2. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that：Step（1）
The power of the jaw crusher is 10 ~ 30kW, and intake port is 200 ~ 400mm, and discharging opening diameter can be adjusted in 10 ~ 30mm
Section.
3. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that：Step（1）
The airslide disintegrating mill is to spray formula airflow milling or circulating tube type airflow milling.
4. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that：Step（1）
The air pressure of the air-flow crushing is 0.7 ~ 0.85MPa.
5. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that：Step（2）
The thickness of making the bed is 0.5 ~ 1.0mm.
6. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that：Step（2）
The hot pressing temperature of the hot-pressing roller is 110 ~ 140 DEG C.
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2017
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|---|---|---|---|---|
| JP2001032130A (en) * | 1999-07-19 | 2001-02-06 | Heisei Polymer Co Ltd | Biodegradable regenerated fiber and film |
| US20060006564A1 (en) * | 2001-01-16 | 2006-01-12 | Debesh Maldas | Process for making modified cellulosic filler from recycled plastic waste and forming wood substitute articles |
| CN107151458A (en) * | 2016-03-02 | 2017-09-12 | 黑龙江鑫达企业集团有限公司 | A kind of inexpensive stalk polyethylene film and preparation method thereof |
| CN106009394A (en) * | 2016-06-28 | 2016-10-12 | 江苏金材科技有限公司 | Environment-friendly pvc agricultural film and preparation method thereof |
| CN107043483A (en) * | 2017-01-20 | 2017-08-15 | 孙佳音 | The method of mulch film recycling |
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Effective date of registration: 20190528 Address after: 200000 Dongye Road, Dongjing Town, Songjiang District, Shanghai Applicant after: Wei Zheng packing products (Shanghai) Co., Ltd. Address before: 610091 Donghai Road, Jiao long industrial port, Qingyang District, Chengdu, Sichuan 4 Applicant before: Chengdu Xinkeli Chemical Sci-Tech Co., Ltd. |
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