CN105968554A - Greenhouse film and preparation method thereof - Google Patents
Greenhouse film and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
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- B29D7/01—Films or sheets
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- 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
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08L2203/16—Applications used for films
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention relates to a greenhouse film which is prepared from the following components in parts by weight: 45-50 parts of LDPE (low-density polyethylene), 20-35 parts of LDPE, 5 parts of EVA (ethylene-vinyl acetate), 0.1 part of hindered amine light stabilizer, 0.1-0.2 part of ultraviolet absorbent UV-531, 0.3 part of fatty soap, 2 parts of nano calcium carbonate, 0.5 part of polylol fatty acid ester, 0.8 part of nickel organic complex light stabilizer, 8 parts of glycerin monostearate, 5 parts of hydrotalcite, 10-20 parts of PE (polyethylene) antiaging agent, 10-15 parts of metallocene polyethylene and 1 part of polyphthalic diamide. The composition formula is optimized to obtain the greenhouse film with favorable anti-atomization effect and excellent physical and mechanical properties. The preparation method has the advantage of simple and reasonable steps, and the prepared finished product satisfies the requirements for atomization resistance and mechanical strength of the greenhouse film.
Description
Technical field
The present invention relates to plastic sheeting technical field, particularly relate to a kind of awning film and preparation method thereof.
Background technology
The awning film that China commonly uses mainly has four kinds: the first is polrvinyl chloride (PVC) canopy film；The second is polyethylene
(PE) canopy film；The third is ethylene-vinyl acetate copolymer canopy film；4th kind is light modulation property agricultural film.These several canopy films are in character
On have points of resemblance, also have difference, thus using effect be the most variant.Wherein, ethylene-vinyl acetate copolymer (is called for short
EVA) canopy film: (adding a certain proportion of eva), EVA resin is in recent years for new agricultural film material agriculturally, manufactures with it
Agricultural film, light transmission, heat insulating ability and weatherability are all better than PVC or PE agricultural film.EVA agricultural film covers and relatively can increase production 10% by other canopy films
Left and right, can use more than 2 years continuously, aging front indeformable, with after can conveniently reclaim, do not easily cause soil or environmental pollution.But
It is that the performance of final awning film is had a significant impact by the ratio that EVA adds, and adds the antiager of different proportion, without dripping
The additive such as agent, heat preserving agent, the performance difference of awning film is relatively big, does not has that preventing atomization is effective, comprehensive physical mechanicalness the most yet
Energy excellence and the awning film of life-span length, the awning film that this all kinds of performances all do well is still the pursuit in row.
Therefore, for existing problems of the prior art, need that a kind of preventing atomization of offer is effective, comprehensive physical mechanicalness badly
Can excellent and life-span length awning film technology be particularly important.
Summary of the invention
It is an object of the invention to avoid weak point of the prior art to provide a kind of awning film.
The purpose of the present invention is achieved through the following technical solutions:
Thering is provided a kind of awning film, it is made up of the component of following weight portion
LDPE 45 ~ 50 parts
LDPE 20 ~ 35 parts
EVA 5 parts
Hindered amine light stabilizer 0.1 part
Ultraviolet absorbent UV-531 0.1 ~ 0.2 part
Fat soap 0.3 part
Nano-calcium carbonate 2 parts
0.5 part of polyol fatty acid fat
Nickel organic complex species light stabilizer 0.8
Glyceryl monostearate 8 parts
Brucite 5 parts
PE age resister 10 ~ 20 parts
Metallocene PE 10 ~ 15 parts
Polyphthalamide 1 part.
Preferably, described LLDPE is made up of the 8 carbon LLDPE of the 4 carbon LLDPE, the 6 carbon LLDPE and 6% of 20% of 74%.
Preferably, in the component of above-mentioned awning film,
LDPE 45 parts
LDPE 20 parts
Ultraviolet absorbent UV-531 0.1 part
PE age resister 10 parts
Metallocene PE 10 parts.
Another is preferred, in the component of above-mentioned awning film,
LDPE 50 parts
LDPE 35 parts
Ultraviolet absorbent UV-531 0.2 part
PE age resister 20 parts
Metallocene PE 15 parts.
Another preferably, in the component of above-mentioned awning film,
LDPE 48 parts
LDPE 28 parts
Ultraviolet absorbent UV-531 0.15 part
PE age resister 15 parts
Metallocene PE 12 parts.
The another kind of purpose of the present invention is to avoid weak point of the prior art to provide a kind of awning film.
Another object of the present invention is achieved through the following technical solutions:
Thering is provided the preparation method of a kind of awning film, it includes following steps:
(1) pan feeding: the components in certain proportion of above-mentioned awning film is joined in blender；
(2) stir: the material that step (1) adds is sufficiently mixed and stirs by blender；
(3) extruder extrusion-blown modling: extrusion-blown modling in the material input extruder after step (2) is stirred, wherein, extrusion
The tail temperature of machine is 165 ~ 170 DEG C, and body temperature is 170 ~ 195 DEG C, and head temperature is 170 ± 2 DEG C；
(4) blown film: using inflation film manufacturing machine that the material that step (3) obtains is carried out blown film process, blow-up ratio is set to 3 ~ 3.2；
(5) cooling: step (4) acquisition material is carried out cooling process；
(6) traction film forming: the material after cooling being carried out draw film forming and processes, draw ratio is set to 5 ~ 6, it is thus achieved that finished product；
(7) finished product batches.
Preferably, in step (3), the tail temperature of extruder is 170 DEG C, and body temperature is 195 DEG C, and head temperature is
172℃；
In step (4), blow-up ratio is set to 3.2；
In step (6), draw ratio is set to 6.
Another is preferred, and in step (3), the tail temperature of extruder is 168 DEG C, and body temperature is 180 DEG C, head temperature
It it is 170 DEG C；
In step (4), blow-up ratio is set to 3.1；
In step (6), draw ratio is set to 5.5.
Another preferably, in step (3), the tail temperature of extruder is 165 DEG C, and body temperature is 180 DEG C, head temperature
It it is 172 DEG C；
In step (4), blow-up ratio is set to 2.8；
In step (6), draw ratio is set to 5.2.
Preferably, in step (5), cooling processing mode is natural cooling or blower fan quenching.
Beneficial effects of the present invention:
A kind of awning film of the present invention is made up of the component of following weight portion: LLDPE(linear low density polyethylene) 45 ~ 50 parts,
LDPE(Low Density Polyethylene) 20 ~ 35 parts, EVA5 part, hindered amine light stabilizer 0.1 part, UV absorbent UV-53 10.1
~ 0.2 part, fat soap 0.3 part, nano-calcium carbonate 2 parts, 0.5 part of polyol fatty acid fat, nickel organic complex species light stabilizer
0.8, glyceryl monostearate 8 parts, brucite 5 parts, PE age resister 10 ~ 20 parts, metallocene PE 10 ~ 15 parts, poly-adjacent benzene
Diformamide 1 part.Base material LLDPE and LDPE, by optimizing compositing formula, is modified processing, and adds appropriate by the present invention
EVA and metallocene PE copolymerization obtain the anti-fog awning film that property is effective, physical and mechanical properties is excellent.The most appropriate is subject to
Hindered amine light stabilizer, nickel organic complex species light stabilizer and UV absorbent UV-53 are formed and effectively slow down greatly with entirety
Canopy film aging speed under light illumination, and active nano-calcium carbonate surface oleophilic drainage, good with resin compatible, it is effectively improved
The rigidity of awning film, toughness, fineness and bending strength.For the present invention cultivation dedicated film preparation method include with
Lower step (1) pan feeding；(2) stir；(3) extruder extrusion-blown modling；(4) blown film；(5) cooling；(6) traction film forming；(7) become
Product batch.The preparation method simple and reasonable steps of the awning film of the present invention, prepared finished product meets anti-fog and mechanical strength
Demand, simple and reasonable steps, prepared finished product meets the anti-fog and requirement of mechanical strength of awning film.
Detailed description of the invention
The invention will be further described with the following Examples.
Embodiment 1
A kind of awning film of the present embodiment is made up of the component of following weight portion
LDPE 45 parts
LDPE 20 parts
EVA 5 parts
Hindered amine light stabilizer 0.1 part
Ultraviolet absorbent UV-531 0.1 part
Fat soap 0.3 part
Nano-calcium carbonate 2 parts
0.5 part of polyol fatty acid fat
Nickel organic complex species light stabilizer 0.8
Glyceryl monostearate 8 parts
Brucite 5 parts
PE age resister 10 parts
Metallocene PE 10 parts
Polyphthalamide 1 part.
A kind of preparation method of awning film, it includes following steps:
(1) pan feeding: the components in certain proportion of above-mentioned awning film is joined in blender；
(2) stir: the material that step (1) adds is sufficiently mixed and stirs by blender；
(3) extruder extrusion-blown modling: extrusion-blown modling in the material input extruder after step (2) is stirred, wherein, extrusion
The tail temperature of machine is 165 DEG C, and body temperature is 170 DEG C, and head temperature is 168 DEG C；Extrusion temperature can not be too high, otherwise resin
Easily decomposition, embrittlement, temperature can not be too low, and otherwise resin plasticizing is bad, it is impossible to carries out sleekly expanding stretching, drawing of thin film
Stretch intensity relatively low, affect glossiness and the poor transparency of film surface simultaneously；
(4) blown film: using inflation film manufacturing machine that the material that step (3) obtains is carried out blown film process, blow-up ratio is set to 3；Blow-up ratio is
One of key control point of inflation film production technology, refers to the ratio between diameter and the pipe ring diameter of non-inflation of film bubble after inflation
Value.Blow-up ratio is the lateral expansion multiple of thin film, and thin film actually carries out cross directional stretch, and plastic molecules can be produced by stretching
A certain degree of orientation effect, blow-up ratio increases, so that the transverse strength of thin film improves.But, blow-up ratio can not be too big,
Otherwise easily cause film bubble unstable, and fold easily occurs in thin film.
(5) cooling: step (4) acquisition material is carried out cooling process；
(6) traction film forming: the material after cooling being carried out draw film forming and processes, draw ratio is set to 5, it is thus achieved that finished product；Draw ratio
Refer to the ratio between the hauling speed of thin film and pipe ring extruded velocity.Draw ratio is longitudinal draw ratio, makes thin film draw
Take and there is on direction orientation.Draw ratio increases, then longitudinal strength also can improve therewith, and the lower thickness of thin film, but such as
Really draw ratio is excessive, and the thickness of thin film is difficult to control to, it could even be possible to can be broken by thin film, causes disconnected film phenomenon, therefore, traction
The state modulator of ratio is also one extremely important factor of thin film high quality of production.
(7) finished product batches.
The film performance test data of table 1 embodiment 1:
Embodiment 2
The main technical schemes of the present embodiment is substantially the same manner as Example 1, the feature not laid down a definition in the present embodiment, uses real
Execute the explanation in example 1, no longer repeat at this.Described LLDPE by 74% 4 carbon LLDPE, the 6 carbon LLDPE's and 6% of 20%
8 carbon LLDPE compositions.The LLDPE of different phosphorus content FINAL APPEARANCE, rigidity, pliability and physical and mechanical properties shadow to awning film
Ringing great, 4 carbon LLDPE, 6 carbon LLDPE and 8 carbon LLDPE are obtained the big of the present embodiment according to the ratio of research and development especially by the present invention
Canopy film pliability is good, and curtain coating property is good and intensity is high.
Embodiment 3
The main technical schemes of the present embodiment is essentially identical with embodiment 1 or embodiment 2, does not lays down a definition in the present embodiment
Feature, uses the explanation in embodiment 1 or embodiment 2, no longer repeats at this.The present embodiment is different from embodiment 1
Part is, in the present embodiment, LDPE weight portion is 50 parts, and LDPE weight portion is 35 parts, ultraviolet absorbent UV-531 weight
Part is 0.2 part, and PE age resister weight portion is 20 parts, and metallocene PE weight portion is 15 parts.
The film performance test data of table 2 embodiment 3:
Embodiment 4
The main technical schemes of the present embodiment is essentially identical with embodiment 1 or embodiment 2, does not lays down a definition in the present embodiment
Feature, uses the explanation in embodiment 1 or embodiment 2, no longer repeats at this.The present embodiment is different from embodiment 1
Part is, in the present embodiment, the weight portion of LLDPE is 48 parts, and LDPE weight portion is 28 parts, ultraviolet absorbent UV-531 weight
Amount part is 0.15 part, and PE age resister weight portion 15 parts, metallocene PE weight portion are 12 parts.
The film performance test data of table 3 embodiment 3:
Embodiment 5
The main technical schemes of the present embodiment is essentially identical with embodiment 1 or embodiment 2, does not lays down a definition in the present embodiment
Feature, uses the explanation in embodiment 1 or embodiment 2, no longer repeats at this.The present embodiment is different from embodiment 1
Part is, in step (3), the tail temperature of extruder is 170 DEG C, and body temperature is 195 DEG C, and head temperature is 172 DEG C；
In step (4), blow-up ratio is set to 3.2；
In step (6), draw ratio is set to 6.
The film performance test data of table 4 embodiment 5:
Embodiment 6
The main technical schemes of the present embodiment is essentially identical with embodiment 1 or embodiment 2, does not lays down a definition in the present embodiment
Feature, uses the explanation in embodiment 1 or embodiment 2, no longer repeats at this.The present embodiment is different from embodiment 1
Part is,
In step (3), the tail temperature of extruder is 168 DEG C, and body temperature is 180 DEG C, and head temperature is 170 DEG C；
In step (4), blow-up ratio is set to 3.1；
In step (6), draw ratio is set to 5.5.
The film performance test data of table 5 embodiment 6:
Embodiment 7
The main technical schemes of the present embodiment is essentially identical with embodiment 1 or embodiment 2, does not lays down a definition in the present embodiment
Feature, uses the explanation in embodiment 1 or embodiment 2, no longer repeats at this.In step (3), the tail temperature of extruder
Degree is 165 DEG C, and body temperature is 180 DEG C, and head temperature is 172 DEG C；
In step (4), blow-up ratio is set to 2.8；
In step (6), draw ratio is set to 5.2.
The film performance test data of table 6 embodiment 7:
Embodiment 8
The main technical schemes of the present embodiment is essentially identical with embodiment 1 or embodiment 2, does not lays down a definition in the present embodiment
Feature, uses the explanation in embodiment 1 or embodiment 2, no longer repeats at this.In step (5), cooling processing mode is
Natural cooling or blower fan quenching.
It is last it should be noted that, above example is merely to illustrate technical scheme explanation rather than protects claim
Protect the restriction of scope.Those of ordinary skill in the art is to be understood that with reference to preferred embodiment, it is possible to the technology to the present invention
Scheme is modified or equivalent, but belongs to the substantially identical of technical solution of the present invention and protection domain.
Claims (10)
1. an awning film, it is characterised in that: it is made up of the component of following weight portion
LDPE 45 ~ 50 parts
LDPE 20 ~ 35 parts
EVA 5 parts
Hindered amine light stabilizer 0.1 part
Ultraviolet absorbent UV-531 0.1 ~ 0.2 part
Fat soap 0.3 part
Nano-calcium carbonate 2 parts
0.5 part of polyol fatty acid fat
Nickel organic complex species light stabilizer 0.8
Glyceryl monostearate 8 parts
Brucite 5 parts
PE age resister 10 ~ 20 parts
Metallocene PE 10 ~ 15 parts
Polyphthalamide 1 part.
A kind of awning film the most according to claim 1, it is characterised in that: described LLDPE by 74% 4 carbon LLDPE, 20%
6 carbon LLDPE and 6% 8 carbon LLDPE composition.
A kind of awning film the most according to claim 1 and 2, it is characterised in that: wherein,
LDPE 45 parts
LDPE 20 parts
Ultraviolet absorbent UV-531 0.1 part
PE age resister 10 parts
Metallocene PE 10 parts.
A kind of awning film the most according to claim 1 and 2, it is characterised in that: wherein,
LDPE 50 parts
LDPE 35 parts
Ultraviolet absorbent UV-531 0.2 part
PE age resister 20 parts
Metallocene PE 15 parts.
A kind of awning film the most according to claim 1 and 2, it is characterised in that: wherein,
LDPE 48 parts
LDPE 28 parts
Ultraviolet absorbent UV-531 0.15 part
PE age resister 15 parts
Metallocene PE 12 parts.
6. the preparation method of an awning film, it is characterised in that: it includes following steps:
(1) pan feeding: the components in certain proportion of the awning film of claim 1 to 5 any one is joined in blender；
(2) stir: the material that step (1) adds is sufficiently mixed and stirs by blender；
(3) extruder extrusion-blown modling: extrusion-blown modling in the material input extruder after step (2) is stirred, wherein, extrusion
The tail temperature of machine is 165 ~ 170 DEG C, and body temperature is 170 ~ 195 DEG C, and head temperature is 170 ± 2 DEG C；
(4) blown film: using inflation film manufacturing machine that the material that step (3) obtains is carried out blown film process, blow-up ratio is set to 3 ~ 3.2；
(5) cooling: step (4) acquisition material is carried out cooling process；
(6) traction film forming: the material after cooling being carried out draw film forming and processes, draw ratio is set to 5 ~ 6, it is thus achieved that finished product；
(7) finished product batches.
The preparation method of a kind of awning film the most according to claim 6, it is characterised in that: in step (3), the machine of extruder
Tail temperature is 170 DEG C, and body temperature is 195 DEG C, and head temperature is 172 DEG C；
In step (4), blow-up ratio is set to 3.2；
In step (6), draw ratio is set to 6.
The preparation method of a kind of awning film the most according to claim 6, it is characterised in that: in step (3), the machine of extruder
Tail temperature is 168 DEG C, and body temperature is 180 DEG C, and head temperature is 170 DEG C；
In step (4), blow-up ratio is set to 3.1；
In step (6), draw ratio is set to 5.5.
The preparation method of a kind of awning film the most according to claim 6, it is characterised in that: in step (3), the machine of extruder
Tail temperature is 165 DEG C, and body temperature is 180 DEG C, and head temperature is 172 DEG C；
In step (4), blow-up ratio is set to 2.8；
In step (6), draw ratio is set to 5.2.
The preparation method of a kind of awning film the most according to claim 6, it is characterised in that: in step (5), cooling processes
Mode is natural cooling or blower fan quenching.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553949.3A CN105968554A (en) | 2016-07-14 | 2016-07-14 | Greenhouse film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553949.3A CN105968554A (en) | 2016-07-14 | 2016-07-14 | Greenhouse film and preparation method thereof |
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| CN105968554A true CN105968554A (en) | 2016-09-28 |
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| CN201610553949.3A Pending CN105968554A (en) | 2016-07-14 | 2016-07-14 | Greenhouse film and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108925298A (en) * | 2018-08-03 | 2018-12-04 | 东莞市济丰农业生态园开发有限公司 | A kind of awning film and preparation method thereof that can shorten the crop growth period |
| CN109135040A (en) * | 2018-09-27 | 2019-01-04 | 南充三樱药用包装材料有限公司 | A kind of polyethylene film formula |
| CN114230890A (en) * | 2021-11-30 | 2022-03-25 | 广东汇发塑业科技有限公司 | Special aquaculture membrane suitable for Guangdong area |
| CN114350047A (en) * | 2021-12-31 | 2022-04-15 | 广东汇发塑业科技有限公司 | High-performance greenhouse film special for watermelons and Hami melons in Yueqiong areas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108925298A (en) * | 2018-08-03 | 2018-12-04 | 东莞市济丰农业生态园开发有限公司 | A kind of awning film and preparation method thereof that can shorten the crop growth period |
| CN109135040A (en) * | 2018-09-27 | 2019-01-04 | 南充三樱药用包装材料有限公司 | A kind of polyethylene film formula |
| CN114230890A (en) * | 2021-11-30 | 2022-03-25 | 广东汇发塑业科技有限公司 | Special aquaculture membrane suitable for Guangdong area |
| CN114350047A (en) * | 2021-12-31 | 2022-04-15 | 广东汇发塑业科技有限公司 | High-performance greenhouse film special for watermelons and Hami melons in Yueqiong areas |
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