CN112210144A - Anti-condensation special light-transmission mulching film - Google Patents
Anti-condensation special light-transmission mulching film Download PDFInfo
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
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- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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Abstract
The invention discloses an anti-condensation and special light-transmission mulching film, which belongs to the technical field of mulching films and comprises a blue 7042, a high-pressure EVA and a functional master batch, and is prepared from the following raw materials in parts by weight: the blue component 7042/500-1000 g, the high pressure component 50-200 g and the EVA component 30-150 g, the functional master batch comprises 2-10 g of ultraviolet absorbent, 1-5 g of light conversion agent, 2-8 g of heat preservation agent, 8-100 g of dripping agent, 5-15 g of antifogging agent, 2-5 g of ultramarine, 3-5 g of paraffin and 1.5-2g of zinc stearate. The ultraviolet absorber can prolong the service life of the mulching film and enable the mulching film to adapt to various environments, the light conversion agent can convert ultraviolet light which is not good for the growth of crops and green and yellow light which is useless for the crops into blue light or red orange light and inhibit plant diseases and insect pests, and the ultramarine blue can enable the surface of the mulching film to be smooth, dust to easily fall off and increase light transmittance and efficient light source conversion, so that the condition of insufficient light transmittance is avoided in the using process of the mulching film.
Description
Technical Field
The invention relates to the technical field of mulching films, in particular to an anti-condensation special light-transmission mulching film.
Background
Mulching film, i.e., ground covering film, is usually a transparent or black PE film, and also has green and silver films, and is used for ground covering to increase the temperature of soil, maintain the moisture of soil, maintain the soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, etc., and promote the growth of plants.
The mulch film looks thin but performs considerably. Not only can improve the ground temperature, preserve water, soil and fertilizer and improve the fertilizer efficiency, but also has multiple functions of killing weeds, preventing diseases and insects, preventing drought and waterlogging, inhibiting salt and protecting seedlings, improving the near-ground photo-thermal condition, enabling the product to be sanitary and clean and the like. For the seedlings just coming out of the soil, the fertilizer has the effects of protecting roots, promoting growth and the like. The method has strong pertinence and applicability to factors limiting agricultural development such as low temperature, little rain, drought, poor ridge, short frost-free period and the like in the three north area of China, and plays a role in planting two-season rice seedlings and cultivating various crops. The fertilizer is popularized and applied in 31 provincial and municipal municipalities in China, is used for more than 40 crops such as grains, cotton, oil, vegetables, melons and fruits, tobacco, sugar, medicines, hemp, tea, forests and the like, leads the crops to be increased by 30 to 50 percent generally and increased by 40 to 60 percent, and is deeply popular with vast farmers.
Chinese patent CN109251470A discloses an agricultural plastic mulching film for preventing and controlling vegetable black spot germs, which belongs to the technical field of plastic films, and is mainly prepared from long carbon chain nylon modified phenolic resin, hydrogenated butyl cyanide adhesive, tert-butyl peroxybutenoate, zirconium silicate, ramie flax, beryllium oxide, nitrocotton resin, fructose, aniline, tetrabutyl titanate, aluminum powder, polytetrafluoroethylene, cobalt blue pigment, herbicide and antibacterial agent; the agricultural plastic mulching film for preventing and controlling vegetable black spot germs integrates insect prevention, weeding and black spot prevention, has good light transmission, strong water solubility of a coating containing active ingredients, is safe to crops in a use dosage range, and is suitable for the condition of dry welding and sufficient illumination.
Disclosure of Invention
The invention aims to: in order to solve the problems that the light transmission of the mulching film is insufficient and water drops are formed in the mulching film in a condensation mode to influence the growth of vegetation in the mulching film, a water condensation preventing mulching film with special light transmission is provided.
In order to achieve the purpose, the invention adopts the technical scheme that: the anti-condensation special light-transmission mulching film comprises a blue 7042, high pressure EVA and a functional master batch, and is prepared from the following raw materials in parts by weight: the blue component 7042/500-1000 g, the high pressure component 50-200 g and the EVA component 30-150 g, the functional master batch comprises 2-10 g of ultraviolet absorbent, 1-5 g of light conversion agent, 2-8 g of heat preservation agent, 8-100 g of dripping agent, 5-15 g of antifogging agent, 2-5 g of ultramarine, 3-5 g of paraffin and 1.5-2g of zinc stearate.
Preferably, the raw materials for preparing the anti-condensation special light-transmitting mulching film comprise the following components in parts by weight: 7042/700 g of blue, high pressure/150 g, EVA/100 g, ultraviolet absorbent/6 g, light conversion agent/3 g, heat preservation agent/5 g, dripping agent/9 g, antifogging agent/8 g, ultramarine/3 g, paraffin/4 g and zinc stearate/2 g;
the anti-condensation special light-transmission mulching film is prepared by the following specific steps:
step 1: preheating raw materials, namely separately storing 7042/700 g of blue, 150 g of high pressure, 100 g of EVA (ethylene vinyl acetate), 6 g of ultraviolet absorbent, 3 g of light conversion agent, 5g of heat preservation agent, 9 g of dripping agent, 8g of antifogging agent, 3 g of ultramarine, 4 g of paraffin and 2g of zinc stearate in a 10 x 10cm storage box, and putting the storage box into a heating box for preheating, wherein the size of the heating box is 140 x 220cm, and the temperature of the heating box is 120 x 200 ℃;
step 2: throwing and stirring, namely respectively and gradually throwing 6 g of the ultraviolet absorbent, 3 g of the light conversion agent, 5g of the heat preservation agent, 9 g of the dripping agent, 8g of the antifogging agent, 3 g of the ultramarine, 4 g of the paraffin and 2g of the zinc stearate obtained in the step 1 into a throwing machine, throwing the raw materials into a high-speed rotary mixer at a constant speed through the throwing machine, then mixing and stirring the raw materials by the high-speed rotary mixer, wherein the rotation speed of the high-speed rotary mixer is 200 and 350 revolutions per minute, and the stirring time is 50-80 minutes, so that the mixed functional master batch is finally obtained;
and step 3: drying and pulverizing, namely taking the functional master batch obtained in the step 2 out of a high-speed rotary mixer, and paving the functional master batch in a drying chamber for drying, wherein the paving thickness is 5-15 mm;
and 4, step 4: mixing ingredients, namely firstly putting 7042/700 g of blue compound, 150 g of high pressure and 100 g of EVA in the step 1 into a high-speed rotating mixer, wherein the rotating speed of the high-speed rotating mixer is 100-250 rpm, the stirring time is 15-30 minutes, then putting the functional master batch obtained in the step 3 into the high-speed rotating mixer, the rotating speed of the high-speed rotating mixer is 180-320 rpm, the stirring time is 30-50 minutes, and meanwhile, the functional master batch is heated by a heater which is arranged at the bottom of the high-speed rotating mixer, and the heating temperature of the heater is 150-200 ℃, so that the mixing efficiency of the raw materials is improved;
and 5: vacuum defoaming, namely pumping the raw material obtained in the step 4 at a constant speed through a fluid pump, discharging the raw material into vacuum pumping equipment, pumping out bubbles mixed in the raw material, wherein the pressure in the vacuum pumping equipment is 0.12MPa, and the vacuumizing time is 10-15 minutes;
step 6: spraying and film-making by a coating machine, namely putting the raw material obtained in the step 5 into the coating machine, continuously heating the raw material by the coating machine to keep the raw material at a constant temperature of 60-85 ℃, and spraying the raw material to form a mulching film;
and 7: cooling the raw materials, moving cooling equipment to the position near the mulching film obtained in the step 6, air-drying and cooling the mulching film, wherein an air outlet of the cooling equipment is handheld or fixed and can blow air directionally or in a handheld manner, and meanwhile, the cooling equipment can rotate by 360 degrees by taking the cooling equipment as a reference, so that the cooling efficiency of the cooling equipment is higher, the cooling equipment can be matched with drying equipment to use, the cooling forming speed of the mulching film is accelerated, the temperature of cold air blown by the cooling equipment is 5-10 degrees, and the temperature of hot air blown by the drying equipment is 70-90 degrees;
and 8: finished product side cut rolling is cut edge the plastic film that reachs in step 7 through the bead cutter, and the length-width ratio of cutting edge is 1: and 3, segmenting the mulching film, rolling by using a rolling machine, wherein the rolling thickness of the rolling machine is 8-10cm, and finally finishing rolling and packaging and storing by using a vacuum packaging machine.
Preferably, the plurality of storage boxes in step 1 are arranged at equal intervals, and the interval is 5-10cm, so that the plurality of raw materials in the storage boxes are preheated, are more uniform and are made of high-temperature-resistant materials, can be reused, and are multiple, and the inner walls of the storage boxes are provided with release layers, so that the raw materials are separated from the storage boxes.
Preferably, the height of the throwing machine in the step 2 is 80-120cm, and the height of the high-speed rotating mixer is 50-80cm, so that the throwing machine can be matched with the high-speed rotating mixer to operate on the raw materials, and the raw materials are mixed according to a ratio more quickly and uniformly.
Preferably, a bearing plate is laid in the drying chamber in the step 3 in advance, the outer surface of the bearing plate is smooth and has non-sticky properties and excellent heat conductivity, so that the bearing plate can be used for drying and pulverizing the raw materials laid on the bearing plate.
Preferably, the length, width and height of the heater in the step 4 are 30: 25: 10cm, and the heater is detachably connected with the high-speed rotating mixer through a bolt.
Preferably, the fluid pump in step 5 is the vortex formula pump body, takes out the raw materials through turbocharging's mode and leaves the transport, vacuum pumping equipment can effectively take out the bubble that is mingled with in the raw materials to the raw materials later stage is used, and more standard compares the nature defoaming of stewing more thoroughly fast.
Preferably, the coater in the step 6 is disposed in the drying chamber mentioned in the step 3, and the coater is a movable device.
Preferably, the heights of the cooling device and the drying device in the step 7 are both 60-80cm, and the cooling device and the drying device are respectively arranged at two sides of the coating machine in the step 6, so as to cool and dry the mulching film made by the coating machine.
Preferably, the edge trimmer, the winding machine and the vacuum packaging machine in the step 8 are positioned on the same workshop assembly line so as to integrally treat the mulching film.
Compared with the prior art, the invention has the beneficial effects that:
1. the ultraviolet absorbent, the light conversion agent and the ultramarine blue are arranged, the ultraviolet absorbent can prolong the service life of the mulching film and enable the mulching film to adapt to various environments, the light conversion agent can convert ultraviolet light which is not good for the growth of crops and green and yellow light which is useless for the crops into blue light or red orange light and inhibit plant diseases and insect pests, and the ultramarine blue can enable the surface of the mulching film to be smooth, dust to easily fall off and increase light transmission and efficient light source conversion, so that the condition of insufficient light transmission is avoided in the using process of the mulching film;
2. the invention can improve the temperature in the mulching film and continuously prolong the temperature in the mulching film by arranging the heat preservation agent, the dripping agent, the antifogging agent and the paraffin, so that the vegetation in the mulching film is more comfortable, the dripping agent can eliminate the formation of water drops in the mulching film, the burning of the crop leaves caused by the condensation of the water drops and the focusing of light rays is reduced, induced pathological changes are generated, the use safety of the mulching film at two ends is improved, the antifogging agent can eliminate the fog in the mulching film, the generation of a light source which is unfavorable for the crops is prevented, the photosynthesis is fully exerted, the vegetation in the mulching film is safer and more favorable to grow, the paraffin can increase the intermiscibility, the fluidity and the dispersibility of various auxiliary agents in the mulching film, the zinc stearate is a heat stabilizer, the integral mulching film is more stable, and the condition that.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," "sleeved," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, can be communicated inside two elements or can be in an interaction relationship of the two elements, and the specific meaning of the terms in the invention can be understood according to specific situations by a person skilled in the art
The first embodiment is as follows:
the anti-condensation special light-transmitting mulching film comprises the following components in parts by weight: 7042/700 g of blue, high pressure/150 g, EVA/100 g, ultraviolet absorbent/6 g, light conversion agent/3 g, heat preservation agent/5 g, dripping agent/9 g, antifogging agent/8 g, ultramarine/3 g, paraffin/4 g and zinc stearate/2 g;
the anti-condensation special light-transmission mulching film is prepared by the following specific steps:
step 1: preheating raw materials, namely separately storing 7042/700 g of blue, 150 g of high pressure, 100 g of EVA (ethylene vinyl acetate), 6 g of ultraviolet absorbent, 3 g of light conversion agent, 5g of heat preservation agent, 9 g of dripping agent, 8g of antifogging agent, 3 g of ultramarine, 4 g of paraffin and 2g of zinc stearate in a 10 x 10cm storage box, and putting the storage box into a heating box for preheating, wherein the size of the heating box is 140 x 220cm, and the temperature of the heating box is 120 x 200 ℃;
step 2: throwing and stirring, namely respectively and gradually throwing 6 g of the ultraviolet absorbent, 3 g of the light conversion agent, 5g of the heat preservation agent, 9 g of the dripping agent, 8g of the antifogging agent, 3 g of the ultramarine, 4 g of the paraffin and 2g of the zinc stearate obtained in the step 1 into a throwing machine, throwing the raw materials into a high-speed rotary mixer at a constant speed through the throwing machine, then mixing and stirring the raw materials by the high-speed rotary mixer, wherein the rotation speed of the high-speed rotary mixer is 200 and 350 revolutions per minute, and the stirring time is 50-80 minutes, so that the mixed functional master batch is finally obtained;
and step 3: drying and pulverizing, namely taking the functional master batch obtained in the step 2 out of a high-speed rotary mixer, and paving the functional master batch in a drying chamber for drying, wherein the paving thickness is 5-15 mm;
and 4, step 4: mixing ingredients, namely firstly putting 7042/700 g of blue compound, 150 g of high pressure and 100 g of EVA in the step 1 into a high-speed rotating mixer, wherein the rotating speed of the high-speed rotating mixer is 100-250 rpm, the stirring time is 15-30 minutes, then putting the functional master batch obtained in the step 3 into the high-speed rotating mixer, the rotating speed of the high-speed rotating mixer is 180-320 rpm, the stirring time is 30-50 minutes, and meanwhile, the functional master batch is heated by a heater which is arranged at the bottom of the high-speed rotating mixer, and the heating temperature of the heater is 150-200 ℃, so that the mixing efficiency of the raw materials is improved;
and 5: vacuum defoaming, namely pumping the raw material obtained in the step 4 at a constant speed through a fluid pump, discharging the raw material into vacuum pumping equipment, pumping out bubbles mixed in the raw material, wherein the pressure in the vacuum pumping equipment is 0.12MPa, and the vacuumizing time is 10-15 minutes;
step 6: spraying and film-making by a coating machine, namely putting the raw material obtained in the step 5 into the coating machine, continuously heating the raw material by the coating machine to keep the raw material at a constant temperature of 60-85 ℃, and spraying the raw material to form a mulching film;
and 7: cooling the raw materials, moving cooling equipment to the position near the mulching film obtained in the step 6, air-drying and cooling the mulching film, wherein an air outlet of the cooling equipment is handheld or fixed and can blow air directionally or in a handheld manner, and meanwhile, the cooling equipment can rotate by 360 degrees by taking the cooling equipment as a reference, so that the cooling efficiency of the cooling equipment is higher, the cooling equipment can be matched with drying equipment to use, the cooling forming speed of the mulching film is accelerated, the temperature of cold air blown by the cooling equipment is 5-10 degrees, and the temperature of hot air blown by the drying equipment is 70-90 degrees;
and 8: finished product side cut rolling is cut edge the plastic film that reachs in step 7 through the bead cutter, and the length-width ratio of cutting edge is 1: and 3, segmenting the mulching film, rolling by using a rolling machine, wherein the rolling thickness of the rolling machine is 8-10cm, and finally finishing rolling and packaging and storing by using a vacuum packaging machine.
Mulch proportioning test data list:
raw material name: bluing 7042, high pressure, EVA, ultraviolet absorbent, light conversion agent, heat insulating agent, dripping agent, antifogging agent, ultramarine, paraffin and zinc stearate;
raw materials by weight: 700 grams, 150 grams, 100 grams, 6 grams, 3 grams, 5 grams, 9 grams, 8 grams, 3 grams, 4 grams, and 2 grams;
wear resistance coefficient: 0.652; deformation coefficient: 0.856; tension index: 1.258; tear resistance: 1.36; service life: and 8.6 years.
Example two:
the anti-condensation special light-transmitting mulching film comprises the following components in parts by weight: 7042/500 g of blue, high pressure/200 g, EVA/120 g, ultraviolet absorbent/8 g, light conversion agent/4 g, heat preservation agent/6 g, dripping agent/8 g, antifogging agent/12 g, ultramarine/5 g, paraffin/3 g and zinc stearate/1.5 g;
the anti-condensation special light-transmission mulching film is prepared by the following specific steps:
step 1: preheating raw materials, namely separately storing 7042/500 g of blue, high pressure/200 g, EVA/120 g, ultraviolet absorbent/8 g, light conversion agent/4 g, heat preservation agent/6 g, dripping agent/8 g, antifogging agent/12 g, ultramarine/5 g, paraffin/3 g and zinc stearate/1.5 g in a 10 x 10cm storage box, and putting the storage box into a heating box for preheating, wherein the size of the heating box is 140 x 220cm, and the temperature of the heating box is 190 ℃;
step 2: throwing and stirring, namely respectively and gradually throwing 8g of the ultraviolet absorbent, 4 g of the light conversion agent, 6 g of the heat preservation agent, 8g of the dripping agent, 12 g of the antifogging agent, 5g of the ultramarine, 3 g of the paraffin and 1.5g of the zinc stearate obtained in the step 1 into a throwing machine, throwing the raw materials into a high-speed rotary mixer at a constant speed through the throwing machine, mixing and stirring the raw materials by the high-speed rotary mixer, wherein the rotating speed of the high-speed rotary mixer is 300 revolutions per minute, and the stirring time is 60 minutes, so that the mixed functional master batch is finally obtained;
and step 3: drying and pulverizing, namely taking the functional master batch obtained in the step 2 out of a high-speed rotary mixer, and paving the functional master batch in a drying chamber for drying, wherein the paving thickness is 8 mm;
and 4, step 4: mixing ingredients, namely putting 7042/500 g of blue component, 89200 g of high pressure and 120 g of EVA component in the step 1 into a high-speed rotating mixer, wherein the rotating speed of the high-speed rotating mixer is 200 rpm, the stirring time is 25 minutes, then putting the functional master batch obtained in the step 3 into the high-speed rotating mixer, the rotating speed of the high-speed rotating mixer is 250 rpm, the stirring time is 40 minutes, and meanwhile, the functional master batch is heated by a heater which is arranged at the bottom of the high-speed rotating mixer, wherein the heating temperature of the heater is 180 ℃, so that the mixing efficiency of the raw materials is improved;
and 5: vacuum defoaming, namely pumping the raw material obtained in the step 4 at a constant speed through a fluid pump, discharging the raw material into vacuum pumping equipment, pumping out bubbles included in the raw material, wherein the pressure in the vacuum pumping equipment is 0.12MPa, and the vacuumizing time is 12 minutes;
step 6: spraying and film-making by a coating machine, namely putting the raw material obtained in the step 5 into the coating machine, continuously heating the raw material by the coating machine to keep the raw material at a constant temperature of 70 ℃, and spraying the raw material to form a mulching film;
and 7: cooling the raw materials, moving cooling equipment to the position near the mulching film obtained in the step 6, air-drying and cooling the mulching film, wherein an air outlet of the cooling equipment is handheld or fixed and can blow air directionally or by hand, and meanwhile, the cooling equipment can rotate by 360 degrees by taking the cooling equipment as a reference, so that the cooling efficiency of the cooling equipment is higher, the cooling equipment can be matched with drying equipment for use, the cooling forming speed of the mulching film is accelerated, the temperature of cold air blown by the cooling equipment is 8 degrees, and the temperature of hot air blown by the drying equipment is 80 degrees;
and 8: finished product side cut rolling is cut edge the plastic film that reachs in step 7 through the bead cutter, and the length-width ratio of cutting edge is 1: and 3, segmenting the mulching film, rolling by using a rolling machine, wherein the rolling thickness of the rolling machine is 8-10cm, and finally finishing rolling and packaging and storing by using a vacuum packaging machine.
Mulch proportioning test data list:
raw material name: bluing 7042, high pressure, EVA, ultraviolet absorbent, light conversion agent, heat insulating agent, dripping agent, antifogging agent, ultramarine, paraffin and zinc stearate;
raw materials by weight: 500 grams, 200 grams, 120 grams, 8 grams, 4 grams, 6 grams, 8 grams, 12 grams, 5 grams, 3 grams, and 1.5 grams;
wear resistance coefficient: 0.826; deformation coefficient: 0.795; tension index: 1.32; tear resistance: 1.51; service life: and 9.1 years.
Example three:
the anti-condensation special light-transmitting mulching film comprises the following components in parts by weight: 7042/700 g of blue, high pressure/150 g, EVA/100 g, ultraviolet absorbent/6 g, light conversion agent/3 g, heat preservation agent/5 g, dripping agent/9 g, antifogging agent/8 g, ultramarine/3 g, paraffin/4 g and zinc stearate/2 g;
the anti-condensation special light-transmission mulching film is prepared by the following specific steps:
step 1: preheating raw materials, namely separately storing 7042/850 g of blue, 100 g of high pressure, 50 g of EVA, 5g of ultraviolet absorbent, 5g of light conversion agent, 3 g of heat preservation agent, 8g of dripping agent, 6 g of antifogging agent, 2g of ultramarine, 3 g of paraffin and 1.8g of zinc stearate in a 10 x 10cm storage box, and putting the storage box into a heating box for preheating, wherein the size of the heating box is 140 x 220cm, and the temperature of the heating box is 150 ℃;
step 2: throwing and stirring, namely respectively and gradually throwing 5g of the ultraviolet absorbent, 5g of the light conversion agent, 3 g of the heat preservation agent, 8g of the dripping agent, 6 g of the antifogging agent, 2g of the ultramarine, 3 g of the paraffin and 1.8g of the zinc stearate obtained in the step 1 into a throwing machine, throwing the raw materials into a high-speed rotary mixer at a constant speed through the throwing machine, mixing and stirring the raw materials by the high-speed rotary mixer, wherein the rotating speed of the high-speed rotary mixer is 280 revolutions per minute, and the stirring time is 65 minutes, so as to finally obtain the mixed functional master batch;
and step 3: drying and pulverizing, namely taking the functional master batch obtained in the step 2 out of a high-speed rotary mixer, and paving the functional master batch in a drying chamber for drying, wherein the paving thickness is 8 mm;
and 4, step 4: mixing ingredients, namely putting 7042/850 g of blue component, 100 g of high pressure component and 50 g of EVA component in the step 1 into a high-speed rotating mixer, wherein the rotating speed of the high-speed rotating mixer is 150 rpm, the stirring time is 22 minutes, then putting the functional master batch obtained in the step 3 into the high-speed rotating mixer, the rotating speed of the high-speed rotating mixer is 260 rpm, the stirring time is 35 minutes, and meanwhile, the raw materials are heated by a heater, wherein the heating temperature of the heater is 195 ℃, so that the mixing efficiency of the raw materials is improved;
and 5: performing vacuum defoaming, namely pumping the raw material obtained in the step 4 at a constant speed through a fluid pump, discharging the raw material into vacuum pumping equipment, pumping out bubbles mixed in the raw material, wherein the pressure in the vacuum pumping equipment is 0.12MPa, and the vacuumizing time is 15 minutes;
step 6: spraying and film-making by a coating machine, namely putting the raw material obtained in the step 5 into the coating machine, continuously heating the raw material by the coating machine to keep the raw material at a constant temperature of 80 ℃, and spraying the raw material to form a mulching film;
and 7: cooling the raw materials, namely moving cooling equipment to the position near the mulching film obtained in the step 6, and air-drying and cooling the mulching film, wherein an air outlet of the cooling equipment is handheld or fixed and can blow air directionally or in a handheld manner, and meanwhile, the cooling equipment can rotate by 360 degrees by taking the cooling equipment as a reference, so that the cooling efficiency of the cooling equipment is higher, the cooling equipment can be matched with drying equipment for use, the cooling forming speed of the mulching film is accelerated, the temperature of cold air blown out by the cooling equipment is 6 degrees, and the temperature of hot air blown out by the drying equipment is 75 degrees;
and 8: finished product side cut rolling is cut edge the plastic film that reachs in step 7 through the bead cutter, and the length-width ratio of cutting edge is 1: and 3, segmenting the mulching film, rolling by using a rolling machine, wherein the rolling thickness of the rolling machine is 8.5cm, and finally finishing rolling and enabling the vacuum packaging machine to package and store.
Mulch proportioning test data list:
raw material name: bluing 7042, high pressure, EVA, ultraviolet absorbent, light conversion agent, heat insulating agent, dripping agent, antifogging agent, ultramarine, paraffin and zinc stearate;
raw materials by weight: 850 grams, 100 grams, 50 grams, 5 grams, 3 grams, 8 grams, 6 grams, 2 grams, 3 grams, and 1.8 grams;
wear resistance coefficient: 0.0.583, respectively; deformation coefficient: 0.914; tension index: 1.183; tear resistance: 1.338; service life: and 8.2 years.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an anti-condensation, special light transmissivity plastic film, includes blue 7042, high pressure, EVA and functional masterbatch, its characterized in that: the feed is prepared from the following raw materials in parts by weight: the blue component 7042/500-1000 g, the high pressure component 50-200 g and the EVA component 30-150 g, the functional master batch comprises 2-10 g of ultraviolet absorbent, 1-5 g of light conversion agent, 2-8 g of heat preservation agent, 8-100 g of dripping agent, 5-15 g of antifogging agent, 2-5 g of ultramarine, 3-5 g of paraffin and 1.5-2g of zinc stearate.
2. The anti-condensation special light-transmitting mulching film according to claim 1, wherein the raw materials for preparing the anti-condensation special light-transmitting mulching film comprise, by weight: 7042/700 g of blue, high pressure/150 g, EVA/100 g, ultraviolet absorbent/6 g, light conversion agent/3 g, heat preservation agent/5 g, dripping agent/9 g, antifogging agent/8 g, ultramarine/3 g, paraffin/4 g and zinc stearate/2 g;
the anti-condensation special light-transmission mulching film is prepared by the following specific steps:
step 1: preheating raw materials, namely separately storing 7042/700 g of blue, 150 g of high pressure, 100 g of EVA (ethylene vinyl acetate), 6 g of ultraviolet absorbent, 3 g of light conversion agent, 5g of heat preservation agent, 9 g of dripping agent, 8g of antifogging agent, 3 g of ultramarine, 4 g of paraffin and 2g of zinc stearate in a 10 x 10cm storage box, and putting the storage box into a heating box for preheating, wherein the size of the heating box is 140 x 220cm, and the temperature of the heating box is 120 x 200 ℃;
step 2: throwing and stirring, namely respectively and gradually throwing 6 g of the ultraviolet absorbent, 3 g of the light conversion agent, 5g of the heat preservation agent, 9 g of the dripping agent, 8g of the antifogging agent, 3 g of the ultramarine, 4 g of the paraffin and 2g of the zinc stearate obtained in the step 1 into a throwing machine, throwing the raw materials into a high-speed rotary mixer at a constant speed through the throwing machine, then mixing and stirring the raw materials by the high-speed rotary mixer, wherein the rotation speed of the high-speed rotary mixer is 200 and 350 revolutions per minute, and the stirring time is 50-80 minutes, so that the mixed functional master batch is finally obtained;
and step 3: drying and pulverizing, namely taking the functional master batch obtained in the step 2 out of a high-speed rotary mixer, and paving the functional master batch in a drying chamber for drying, wherein the paving thickness is 5-15 mm;
and 4, step 4: mixing ingredients, namely firstly putting 7042/700 g of blue compound, 150 g of high pressure and 100 g of EVA in the step 1 into a high-speed rotating mixer, wherein the rotating speed of the high-speed rotating mixer is 100-250 rpm, the stirring time is 15-30 minutes, then putting the functional master batch obtained in the step 3 into the high-speed rotating mixer, the rotating speed of the high-speed rotating mixer is 180-320 rpm, the stirring time is 30-50 minutes, and meanwhile, the functional master batch is heated by a heater which is arranged at the bottom of the high-speed rotating mixer, and the heating temperature of the heater is 150-200 ℃, so that the mixing efficiency of the raw materials is improved;
and 5: vacuum defoaming, namely pumping the raw material obtained in the step 4 at a constant speed through a fluid pump, discharging the raw material into vacuum pumping equipment, pumping out bubbles mixed in the raw material, wherein the pressure in the vacuum pumping equipment is 0.12MPa, and the vacuumizing time is 10-15 minutes;
step 6: spraying and film-making by a coating machine, namely putting the raw material obtained in the step 5 into the coating machine, continuously heating the raw material by the coating machine to keep the raw material at a constant temperature of 60-85 ℃, and spraying the raw material to form a mulching film;
and 7: cooling the raw materials, moving cooling equipment to the position near the mulching film obtained in the step 6, air-drying and cooling the mulching film, wherein an air outlet of the cooling equipment is handheld or fixed and can blow air directionally or in a handheld manner, and meanwhile, the cooling equipment can rotate by 360 degrees by taking the cooling equipment as a reference, so that the cooling efficiency of the cooling equipment is higher, the cooling equipment can be matched with drying equipment to use, the cooling forming speed of the mulching film is accelerated, the temperature of cold air blown by the cooling equipment is 5-10 degrees, and the temperature of hot air blown by the drying equipment is 70-90 degrees;
and 8: finished product side cut rolling is cut edge the plastic film that reachs in step 7 through the bead cutter, and the length-width ratio of cutting edge is 1: and 3, segmenting the mulching film, rolling by using a rolling machine, wherein the rolling thickness of the rolling machine is 8-10cm, and finally finishing rolling and packaging and storing by using a vacuum packaging machine.
3. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: the storage boxes in the step 1 are arranged at equal intervals, the interval is 5-10cm, so that the raw materials in the storage boxes are preheated, the raw materials are more uniform and are made of high-temperature-resistant materials, the storage boxes are reusable, and the inner walls of the storage boxes are provided with release layers so that the raw materials and the storage boxes can be separated.
4. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: the height of the throwing machine in the step 2 is 80-120cm, and the height of the high-speed rotating mixing machine is 50-80cm, so that the throwing machine can be matched with the high-speed rotating mixing machine to operate the raw materials, and the raw materials can be mixed more quickly and uniformly.
5. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: and (3) paving a bearing plate in the drying chamber in the step (3), wherein the outer surface of the bearing plate is smooth and has non-sticky properties and excellent heat-conducting property, so that the bearing plate can be used for drying and pulverizing the raw materials paved on the bearing plate.
6. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: the length, width and height of the heater in the step 4 are 30: 25: 10cm, and the heater is detachably connected with the high-speed rotating mixer through a bolt.
7. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: the fluid pump in step 5 is the vortex formula pump body, takes out the raw materials through turbocharging's mode and leaves the transport, vacuum pumping equipment can effectively take out the bubble that is mingled with in the raw materials to the raw materials later stage uses, and more standard compares the nature defoaming of stewing more thoroughly fast.
8. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: the coater in the step 6 is arranged in the drying chamber mentioned in the step 3, and the coater is a movable device.
9. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: and (3) the height of the cooling equipment and the height of the drying equipment in the step (7) are both 60-80cm, and the cooling equipment and the drying equipment are respectively arranged on two sides of the coating machine in the step (6) so as to carry out cooling and drying treatment on the mulching film made by the coating machine.
10. The anti-condensation special light-transmitting mulching film according to claim 2, wherein: and the edge trimmer, the winding machine and the vacuum packaging machine in the step 8 are positioned on the same workshop assembly line so as to integrally treat the mulching film.
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| CN103937179A (en) * | 2013-01-17 | 2014-07-23 | 山东省意可曼科技有限公司 | Completely-biodegradable mulching film material and mulching film |
| CN109251470A (en) * | 2018-09-14 | 2019-01-22 | 桐城市华猫软膜有限公司 | A kind of agricultural plastic ground membrane for prevention and control vegetables alternaria |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864105A (en) * | 2010-06-13 | 2010-10-20 | 山东农业大学 | Novel agricultural anti-drop defogging film |
| CN103937179A (en) * | 2013-01-17 | 2014-07-23 | 山东省意可曼科技有限公司 | Completely-biodegradable mulching film material and mulching film |
| CN103087393A (en) * | 2013-02-19 | 2013-05-08 | 刘德元 | Converted blue light long-life-light-conversion multifunctional mulching film |
| CN109251470A (en) * | 2018-09-14 | 2019-01-22 | 桐城市华猫软膜有限公司 | A kind of agricultural plastic ground membrane for prevention and control vegetables alternaria |
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