CN104175579B - A kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof - Google Patents
A kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof Download PDFInfo
- Publication number
- CN104175579B CN104175579B CN201410386704.7A CN201410386704A CN104175579B CN 104175579 B CN104175579 B CN 104175579B CN 201410386704 A CN201410386704 A CN 201410386704A CN 104175579 B CN104175579 B CN 104175579B
- Authority
- CN
- China
- Prior art keywords
- film
- thermal insulation
- double layer
- layer hollow
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses the preparation method of a kind of double layer hollow height thermal insulation greenhouse film, comprise the steps: that (1) weighs polyethylene, metallocene PE and various auxiliary agent by weight and mixes, then it is dried with exsiccator, then with blender, material and transparent agent, nano material is uniformly mixed；(2) compound is by fully melting in metering feeding machine feeding screw extruder, mixing, and is then passed through net-changing device and is filtered to remove impurity；(3) material of hot melt being delivered to carry out in mould high-temperature molding, after preforming, double-deck canopy film is sent from mould outlet, then the fast cooling shaping through water cooling plant；(4) the canopy film after water-cooled molding is delivered to post bake in drying unit, then through traction and deflector roll send and carry out secondary sizing cooling again by wrap-up rolling after cut and finished product.Production technology of the present invention is simple, and product light transmission is good, insulating power is strong, anti-fog performance is good and service life is long.
Description
Technical field
The present invention relates to the preparation method of a kind of canopy film, especially a kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof.
Background technology
Canopy film is applicable to growing vegetables and raise livestock, has obtained a large amount of use in agricultural, animal husbandry and aquaculture, and canopy film mulching and planting technology can promote plant growth, make crop yield, also can realize cultivating fruit and vegerable in cold season.At present, the common canopy membrane material of China is based on polyethylene (PE), but there is bad mechanical strength, the aging tear weak, easy of wind resistance anti-snow ability, insulating power difference and easily hang the shortcoming of water droplet, and great majority take and change for 1 year one.Domestic also have part canopy film to use polrvinyl chloride (PVC), ethylene/acetic acid ethylene (EVA) and metallocene PE (m-PE), external then useful polyethylene terephthalate (PET), Merlon (PC) and polytetrafluoroethylene (PTFE) are prepared, although these products are functional, but price is high and be unfavorable for the marketing of Peng Mo manufacturer.
Summary of the invention
For the deficiencies in the prior art, the present invention provides the preparation method of a kind of double layer hollow height thermal insulation greenhouse film, and its production technology is simple, saves material cost, and properties of product are excellent.
The technical scheme is that the preparation method of a kind of double layer hollow height thermal insulation greenhouse film, comprise the steps:
(1) weigh polyethylene, metallocene PE and various auxiliary agent by weight to mix, auxiliary agent includes antifoggant, uv-resistant agent, age resister, lubricant and plasticizer, mixing temperature is 160-240 DEG C, time is 20-30 min, then it is dried with exsiccator, then with blender, material and transparent agent, nano material is uniformly mixed 1-3min；
(2) compound is by fully melting in metering feeding machine feeding screw extruder, mixing, and is then passed through net-changing device and is filtered to remove impurity；
(3) material of hot melt is fed through in the mould that the structure with double-deck canopy film to be processed matches and carries out high-temperature molding, this mould has the jet pipeline for blowing thin film being connected with external compressed air simultaneously, after preforming, upper and lower film layer is sent and be effectively isolated to double-deck canopy film from mould outlet, and this preforming canopy film realizes fast cooling shaping through water cooling plant；
(4) the canopy film after water-cooled molding is delivered to post bake in drying unit, then through traction and deflector roll send and carry out secondary sizing cooling again by wrap-up rolling after cut and finished product.
In described step (2), the screw speed of extruder is that 10-50 turns/min, and the temperature of processing subregion is 150-160 DEG C of the 1st district, the 2nd 160-170 DEG C of district, 180-185 DEG C of 3-the 7th district；The machine barrel of described extruder is connected with negative pressure device, and control negative pressure is 0.08-0.1MPa, to draw produced gas, the little molecule of melt and moisture in the course of processing, thus the mixing and plasticizing effect of improving material；Described net-changing device has the filter screen of double-deck 120-240 mesh, to strengthen filter effect；In described step (3), double-deck canopy film has upper film, lower film and reinforcement, and reinforcement is connected between upper and lower film and the cross section that constitutes is triangle, square or rectangular, and the distance between upper and lower film is 2-15mm.
A kind of double layer hollow height thermal insulation greenhouse film, its material forms by weight and includes: polyethylene and metallocene PE 60-100 part, transparent agent 0-30 part, nano material 1-10 part, antifoggant 1-5 part, uv-resistant agent 0.5-2 part, age resister 0.5-2 part, lubricant 0.5-2 part, plasticizer 0.5-2 part.
Preferably, consisting of of described polyethylene and metallocene PE: Low Density Polyethylene (LDPE) 20-30 part, linear low density polyethylene (LLDPE) 40-50 part, metallocene PE (ml-LDPE) 0-20 part.
Described transparent agent is at least one in polythene PE, polypropylene PP, Biaxially oriented polypropylene BOPP, polyvinylchloride；Nano material is TiO2 nano material or ZnO nano material；Antifoggant is glyceryl monostearate；Lubricant is opening agent, Pulvis Talci, kieselguhr, stearic acid or Metallic stearates；Polyhydric alcohol then selected by plasticizer.
The invention have the benefit that 1, product specification can be by customization, the canopy film being made up of the composition of raw materials of high-quality, PE with high transparency, strengthen the ml-LDPE of toughness, transparent agent and be main body extrusion molding on plastic extrusion facility, by the zonal control of extrusion temperature is promoted end properties, and in the middle of finished product, have reinforcement, resistance to draw durable, anti-crushing by snow, uprising wind, and anti-fog performance is good, the outdoor life-span was up to more than 8 years, light transmission is good simultaneously, the utilization rate of solar energy and the photosynthesis level of crop can be improved, thus promote precocity and the volume increase of crop.2, because employing double-decker there is air-isolation in centre; insulating power is greatly reinforced; this configuration reduces the heat conductivity of material; thermal resistance is big, not only can heat insulation but also storable heat, have the function being automatically adjusted temperature indoor temperature; the room temperature decrease speed significantly slowed down the time after midnight; making protected object be benefited, winter, indoor temperature was high than outdoor temperature 17 DEG C, and ground temperature is higher than the ground temperature of common canopy film more than 2 DEG C.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the present invention.
Fig. 2 is the production method schematic diagram of the present invention.
In figure, 1-mixer hopper, 2-mixer, 3-exsiccator, 4-blender, 5-metering feeding machine, 6-screw extruder, 7-net-changing device, 8-mould, 9-water cooling plant, 10-drying unit, 12-draws, 13-deflector roll, 14-wrap-up.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
As depicted in figs. 1 and 2, the technological process in the embodiment of the present invention is:
(1) weigh LDPE30kg, LLDPE50kg, metallocene PE 10 kg and various auxiliary agent by weight to put in mixer 2 mix by mixer hopper 1, auxiliary agent is antifoggant (glyceryl monostearate) 2kg, uv-resistant agent 1kg, age resister 1kg, lubricant 2kg(opening agent, calcium stearate, magnesium stearate or barium stearate) and plasticizer 1kg, mixing temperature is 220 DEG C, time is 30 min, then it is dried with exsiccator 3, then with blender 4, material and PVC10kg, TiO2 nano material 5kg is uniformly mixed 3min；
(2) compound is sent in screw extruder 6 by metering feeding machine 5 and is fully melted, mixes, the screw speed of extruder 6 controls at 40 turns/min, the temperature of processing subregion is 160 DEG C of the 1st district, 2nd 170 DEG C of district, 185 DEG C of 3-the 7th district, the machine barrel of described extruder is connected with negative pressure device, is then passed through the net-changing device 7 that double-deck mesh number is 120 and is filtered to remove impurity；
(3) material of hot melt is fed through in the mould 8 that the structure with double-deck canopy film to be processed matches and carries out high-temperature molding, the structure of this bilayer canopy film is by upper film, lower film and reinforcement composition, reinforcement is connected between upper film and the lower film that distance is 3mm and is formed with the cross section of triangle, this mould 8 has the jet pipeline for blowing thin film being connected with external compressed air simultaneously, this jet pipeline has multiple jet branch road between adjacent said rib, preforming after completing double-deck canopy film compressed gas in jet branch road on mould 8 outlet is sent and is effectively isolated, lower film layer, this preforming canopy film realizes fast cooling shaping through water cooling plant 9；
(4) the canopy film after water-cooled molding is delivered to post bake in drying unit 10, then send through traction 12 and deflector roll 13 and carry out secondary sizing cooling again by wrap-up 14 rolling and cut and just obtained double layer hollow canopy film product.
The principle of the simply explanation present invention described in above-described embodiment and description and most preferred embodiment; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.
Claims (8)
1. a preparation method for double layer hollow height thermal insulation greenhouse film, comprises the steps:
(1) weighing polyethylene, metallocene PE and various auxiliary agent by weight to mix, auxiliary agent includes antifoggant, uv-resistant agent, age resister, lubricant and plasticizer, and mixing temperature is 160-240 DEG C, and the time is 20-30
Min, is then dried with exsiccator, then with blender, material and transparent agent, nano material is uniformly mixed 1-3min；
(2) compound is by fully melting in metering feeding machine feeding screw extruder, mixing, and is then passed through net-changing device and is filtered to remove impurity；
(3) material of hot melt is fed through in the mould that the structure with double-deck canopy film to be processed matches and carries out high-temperature molding, this mould has the jet pipeline for blowing thin film being connected with external compressed air simultaneously, after preforming, upper and lower film layer is sent and be effectively isolated to double-deck canopy film from mould outlet, and this preforming canopy film realizes fast cooling shaping through water cooling plant；
(4) the canopy film after water-cooled molding is delivered to post bake in drying unit, then through traction and deflector roll send and carry out secondary sizing cooling again by wrap-up rolling after cut and finished product.
The preparation method of double layer hollow height thermal insulation greenhouse film the most according to claim 1, it is characterized in that: in described step (2), the screw speed of extruder is that 10-50 turns/min, the temperature of processing subregion is 150-160 DEG C of the 1st district, 2nd 160-170 DEG C of district, 180-185 DEG C of 3-the 7th district, the machine barrel of described extruder is connected with negative pressure device, and described net-changing device uses the filter screen of double-deck 120-240 mesh.
The preparation method of double layer hollow height thermal insulation greenhouse film the most according to claim 1, it is characterized in that: in described step (3), double-deck canopy film has upper film, lower film and reinforcement, reinforcement is connected between upper and lower film and the cross section that constitutes is triangle, square or rectangular, and the distance between upper and lower film is 2-15mm.
4. a double layer hollow height thermal insulation greenhouse film, its material forms by weight and includes: polyethylene and metallocene PE 60-100 part, transparent agent 0-30 part, nano material 1-10 part, antifoggant 1-5 part, uv-resistant agent 0.5-2 part, age resister 0.5-2 part, lubricant 0.5-2 part, plasticizer 0.5-2 part.
Double layer hollow height thermal insulation greenhouse film the most according to claim 4, it is characterised in that: consisting of of described polyethylene and metallocene PE: Low Density Polyethylene (LDPE) 20-30 part, linear low density polyethylene (LLDPE) 40-50 part, metallocene PE (ml-LDPE) 0-20 part.
6. according to the double layer hollow height thermal insulation greenhouse film described in claim 4 or 5, it is characterised in that: described transparent agent is at least one in polythene PE, polypropylene PP, polyvinylchloride.
7. according to the double layer hollow height thermal insulation greenhouse film described in claim 4 or 5, it is characterised in that: described nano material is TiO2 nano material or ZnO nano material.
8. according to the double layer hollow height thermal insulation greenhouse film described in claim 4 or 5, it is characterised in that: described antifoggant is glyceryl monostearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410386704.7A CN104175579B (en) | 2014-08-08 | 2014-08-08 | A kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410386704.7A CN104175579B (en) | 2014-08-08 | 2014-08-08 | A kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104175579A CN104175579A (en) | 2014-12-03 |
| CN104175579B true CN104175579B (en) | 2016-10-05 |
Family
ID=51957070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410386704.7A Active CN104175579B (en) | 2014-08-08 | 2014-08-08 | A kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104175579B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788787A (en) * | 2015-04-21 | 2015-07-22 | 苏州市鼎立包装有限公司 | Film material for greenhouse and preparation method of film material |
| CN104788786A (en) * | 2015-04-21 | 2015-07-22 | 苏州市鼎立包装有限公司 | PE stretch film material and preparation method thereof |
| CN106751120A (en) * | 2016-11-15 | 2017-05-31 | 苍南宇诺新材料科技有限公司 | High brightness plastic sheeting is formulated |
| CN109220956A (en) * | 2018-09-10 | 2019-01-18 | 巢湖市聚汇遮阳设备科技有限公司 | Shade structures for aquiculture green house |
| CN110698781A (en) * | 2019-10-28 | 2020-01-17 | 江阴市星宇化工有限公司 | High-activity tricalcium phosphate for high-flame-retardant polystyrene resin and production device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202179000U (en) * | 2011-08-18 | 2012-04-04 | 由朋双 | Air-filled, efficient and thermal-insulation greenhouse film |
| CN102688825A (en) * | 2012-05-23 | 2012-09-26 | 广东金明精机股份有限公司 | Coating device and coating process for functional coatings of agricultural films |
| CN103264563A (en) * | 2013-06-04 | 2013-08-28 | 河南省银丰塑料有限公司 | Three-layer co-extruded EVA (ethylene-vinyl acetate copolymer) long-life fog-dissipation environment-friendly multifunctional greenhouse film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209583B (en) * | 2010-09-28 | 2014-08-20 | 可乐丽股份有限公司 | Film for plant cultivation |
-
2014
- 2014-08-08 CN CN201410386704.7A patent/CN104175579B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202179000U (en) * | 2011-08-18 | 2012-04-04 | 由朋双 | Air-filled, efficient and thermal-insulation greenhouse film |
| CN102688825A (en) * | 2012-05-23 | 2012-09-26 | 广东金明精机股份有限公司 | Coating device and coating process for functional coatings of agricultural films |
| CN103264563A (en) * | 2013-06-04 | 2013-08-28 | 河南省银丰塑料有限公司 | Three-layer co-extruded EVA (ethylene-vinyl acetate copolymer) long-life fog-dissipation environment-friendly multifunctional greenhouse film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104175579A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104175579B (en) | A kind of double layer hollow height thermal insulation greenhouse film and preparation method thereof | |
| CN104341672B (en) | Special weeding film for fruit trees and preparation process of special weeding film | |
| US20180235159A1 (en) | Agricultural film formulation, agricultural mulch film and preparation method thereof | |
| CN109318563A (en) | Vinyl-vinyl acetate copolymer EVA blowing moulding greenhouse film-strawberry dedicated film | |
| CN104844899A (en) | Modified plastic with antibacterial mould-proof performance and production method thereof | |
| CN104844901A (en) | High-toughness anti-bacterial modified plastic and production method thereof | |
| CN108357173A (en) | A kind of vinyl-vinyl acetate copolymer EVA blowing moulding greenhouse films and preparation method thereof | |
| CN103483661A (en) | Degradable mulching film and preparation method thereof | |
| CN104829964A (en) | Modified plastic with high tensile strength and good weatherability and manufacturing method thereof | |
| CN203788853U (en) | Novel calf island | |
| CN104725698A (en) | Novel hollow glass microballoon filled modified plastic and manufacturing method thereof | |
| CN104371168A (en) | Enhanced HDPE double-wall corrugated pipe and preparation method thereof | |
| CN104725700A (en) | Impact-resistant and heat-resistant modified plastic and production method thereof | |
| CN104725712A (en) | Excellent-toughness high-weather-resistance modified plastic and manufacturing method thereof | |
| CN109258222A (en) | Vinyl-vinyl acetate copolymer EVA blowing moulding greenhouse film and preparation method thereof | |
| CN103756344A (en) | Novel framework material for vegetable greenhouse and preparation method thereof | |
| CN104725739A (en) | Sunshine-resistant and ageing-resistant modified plastic and preparation method thereof | |
| CN103788449A (en) | Processing technology of plastic film | |
| CN104725702A (en) | Boron-carbide-filled modified plastic and manufacturing method thereof | |
| CN104480715A (en) | Preparation method of high-performance denim and product thereof | |
| CN111334060A (en) | Preparation method of bamboo fiber polylactic acid composite plastic capable of being rapidly refined and degraded | |
| CN104725701A (en) | Far-infrared negative ionic powder filled modified plastic and preparation method thereof | |
| CN103881205A (en) | Phytogenic antimicrobial composite film material | |
| CN104761787A (en) | Modified plastic being excellent in cold resistance and warm retention and preparation method thereof | |
| CN112026307B (en) | Metallocene dripping spring greenhouse film and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |