CN113071174A - Sterile composite roll film for seed storage and production process thereof - Google Patents
Sterile composite roll film for seed storage and production process thereof Download PDFInfo
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- CN113071174A CN113071174A CN202110319658.9A CN202110319658A CN113071174A CN 113071174 A CN113071174 A CN 113071174A CN 202110319658 A CN202110319658 A CN 202110319658A CN 113071174 A CN113071174 A CN 113071174A
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- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 108010016634 Seed Storage Proteins Proteins 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 49
- 239000004677 Nylon Substances 0.000 claims abstract description 29
- 239000002114 nanocomposite Substances 0.000 claims abstract description 29
- 229920001778 nylon Polymers 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000012792 core layer Substances 0.000 claims abstract description 25
- 239000002344 surface layer Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 23
- 238000001125 extrusion Methods 0.000 claims abstract description 19
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 16
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 16
- 229920002799 BoPET Polymers 0.000 claims abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 26
- 239000004698 Polyethylene Substances 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 14
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 13
- 239000000654 additive Substances 0.000 claims description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 10
- 238000000071 blow moulding Methods 0.000 claims description 9
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 claims description 7
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 7
- 229920002581 Glucomannan Polymers 0.000 claims description 7
- 229920002752 Konjac Polymers 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 7
- 229940046240 glucomannan Drugs 0.000 claims description 7
- 229920001903 high density polyethylene Polymers 0.000 claims description 7
- 239000004700 high-density polyethylene Substances 0.000 claims description 7
- 235000010485 konjac Nutrition 0.000 claims description 7
- 229920001684 low density polyethylene Polymers 0.000 claims description 7
- 239000004702 low-density polyethylene Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000008223 sterile water Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 230000035784 germination Effects 0.000 abstract description 5
- 230000006750 UV protection Effects 0.000 abstract description 3
- 230000003385 bacteriostatic effect Effects 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007226 seed germination Effects 0.000 description 3
- 241001312219 Amorphophallus konjac Species 0.000 description 2
- 235000001206 Amorphophallus rivieri Nutrition 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000252 konjac Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2410/00—Agriculture-related articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of composite films and production processes thereof, and particularly relates to a sterile composite roll film for seed storage and a production process thereof. The sterile composite roll film for seed storage is composed of a surface layer, an inner layer and a core layer positioned between the surface layer and the inner layer; and the surface layer, the inner layer and the core layer positioned between the surface layer and the inner layer are bonded through a solvent-free composite process to prepare the sterile composite roll film for seed storage and the like. According to the invention, the inner layer and the outer layer have high ultraviolet resistance, the core layer is mainly a three-layer co-extrusion nylon water bag film, and polyvinyl alcohol is coated on the surfaces of the PET film and the nano composite film; therefore, the sterile composite roll film for storing the seeds, which has high toughness and strong bacteriostatic activity and can inhibit the germination of the seeds, is achieved, and meanwhile, the production process is simple and is a simple process, so that the process cost and the efficiency are superior to those of the production process of other products.
Description
Technical Field
The invention belongs to the technical field of composite films and production processes thereof, and particularly relates to a sterile composite roll film for seed storage and a production process thereof.
Background
When storing seeds, the germination of the seeds needs to be inhibited, and the seeds need to be stored under an aseptic condition, and the existing composite roll film has defects in toughness, bacteriostasis and production process, so that the development of an aseptic composite roll film for storing the seeds, which has high toughness and bacteriostasis and can inhibit the germination of the seeds, and the production process of the aseptic composite roll film for reducing the production cost is urgently needed.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects of the existing composite roll film, such as toughness, bacteriostasis and production process, the invention provides the sterile composite roll film for seed storage, which has high toughness and bacteriostasis and can inhibit seed germination, and the production process of the sterile composite roll film can reduce production cost.
(II) technical scheme
The invention is realized by the following technical scheme: the invention provides an aseptic composite roll film for seed storage, which consists of a surface layer, an inner layer and a core layer positioned between the surface layer and the inner layer; bonding the surface layer, the inner layer and the core layer positioned between the surface layer and the inner layer through a solvent-free composite process to prepare the sterile composite roll film for seed storage;
the surface layer takes a PE film as a base material, polyvinyl alcohol is arranged on the surface of the PET film, and the polyvinyl alcohol is coated on the surface of the PET film by a coating method;
the core layer is a three-layer co-extrusion nylon water bag film;
the inner layer is a nano composite film, polyvinyl alcohol is arranged on the surface of the nano composite film, and the polyvinyl alcohol is coated on the surface of the PET film through a coating method.
Furthermore, the PE film is composed of 3-5 parts of high-density polyethylene, 2-4 parts of low-density polyethylene and 1-2 parts of additives.
Further, the additive is 1-2 parts of calcium carbonate, 2-3 parts of shading and ultraviolet-resistant white master batch thereof.
Further, the three-layer co-extrusion nylon water bag film is prepared from 5-8 parts of nylon, 1-3 parts of EVOH, 2-4 parts of PP, 1-2 parts of calcium carbonate and 2-3 parts of shading and anti-ultraviolet white master batch through a three-layer co-extrusion process.
Further, the PE film is composed of 5 parts of high-density polyethylene, 4 parts of low-density polyethylene and 2 parts of additives.
Further, the additive is 1-2 parts of calcium carbonate, 2-3 parts of shading and ultraviolet-resistant white master batch thereof.
Further, the three-layer co-extrusion nylon water bag film is prepared from 8 parts of nylon, 3 parts of EVOH, 4 parts of PP, 2 parts of calcium carbonate, 3 parts of shading and anti-ultraviolet white master batch through a three-layer co-extrusion process.
Furthermore, the nano composite film is prepared by adopting nano ZnO as a raw material and konjak glucomannan as a matrix and adopting a blending method.
The invention also provides a production process of the sterile composite roll film for seed storage, which comprises the following steps:
A. selecting raw material components corresponding to the surface layer, namely components of high-density polyethylene, low-density polyethylene and additives in corresponding proportion, and uniformly mixing the raw material components in a mixer to obtain a surface layer mixture; the surface layer mixture is melted and then extruded from the head of each extruder, enters a blow molding machine, enters a processing flow channel, is lifted upwards, is naturally cooled in the lifting process, and is converted into a PE film through a closing mechanism arranged above the lifting machine;
B. the inner layer is a nano composite film, the composite film is prepared by taking nano ZnO as a raw material and konjak glucomannan as a matrix and adopting a blending method;
C. selecting raw material components corresponding to a core layer, namely components corresponding to the ratio of nylon, EVOH, PP, calcium carbonate, shading and uvioresistant white master batch, uniformly mixing the raw material components in a mixing machine to obtain a core layer mixture, wherein three core layer mixtures are provided, the core layer mixture is extruded from respective extruder heads after being melted and then enters different processing flow channels of a blow molding machine, air is introduced into the blow molding machine to blow and expand a mold blank into film bubbles, the film bubbles are lifted upwards and naturally cooled in the lifting process, and the lifted film bubbles are lifted and then are naturally cooled
The three-layer co-extruded nylon water bag film is converted by a closing mechanism arranged above;
and D, directly adopting a solvent-free composite process to carry out composite forming on the PE film, the three-layer co-extrusion nylon water bag film and the nano composite film, wherein the three-layer co-extrusion nylon water bag film is positioned between the nano composite film and the PE film, then coating polyvinyl alcohol on the surface of the PE film and the surface of the nano composite film by using a coating method, and finally soaking in sterile water for 5-8min to prepare the sterile composite roll film for seed storage.
(III) advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
the core layer is a three-layer co-extruded nylon water bag film, the comprehensive physical properties of the nylon water bag film are excellent, meanwhile, the surface layer mainly comprises a PE film, and the additive mainly comprises calcium carbonate, shading and ultraviolet-resistant white master batch, so that the seeds can be effectively protected from being irradiated by ultraviolet rays, and thus, the comprehensive physical properties of the composite roll film can be improved; the inner layer of the composite film is mainly a nano composite film, the nano composite film adopts nano ZnO as a raw material and konjac glucomannan as a matrix, so that the nano composite film has strong ultraviolet barrier property and antibacterial property, and the surfaces of the PET film and the nano composite film are coated with polyvinyl alcohol which has the effect of inhibiting seed germination;
therefore, the inner layer and the outer layer have high ultraviolet resistance, the core layer is mainly a three-layer co-extrusion nylon water bag film, and polyvinyl alcohol is coated on the surface of the PET film and the surface of the nano composite film; therefore, the sterile composite roll film for storing the seeds, which has high toughness and strong bacteriostatic activity and can inhibit the germination of the seeds, is achieved, and meanwhile, the production process is simple and is a simple process, so that the process cost and the efficiency are superior to those of the production process of other products.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a sterile composite roll film for seed storage according to the present invention.
Detailed Description
In the technical scheme:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A. Selecting raw material components corresponding to the surface layer, namely a PE film is prepared by putting 5 parts of high-density polyethylene, 4 parts of low-density polyethylene and 2 parts of additive, wherein the additive is 1 part of calcium carbonate, 2 parts of shading and ultraviolet-resistant white master batch thereof into a mixer for uniform mixing to obtain a surface layer mixture; the surface layer mixture is melted and then extruded from the head of each extruder, enters a blow molding machine, enters a processing flow channel, is lifted upwards, is naturally cooled in the lifting process, and is converted into a PE film through a closing mechanism arranged above the lifting machine;
B. the inner layer is a nano composite film, the composite film is prepared by taking nano ZnO as a raw material and konjak glucomannan as a matrix and adopting a blending method;
C. selecting raw material components corresponding to a core layer, namely 8 parts of nylon, 3 parts of EVOH, 4 parts of PP, 2 parts of calcium carbonate, 3 parts of shading and uvioresistant white master batch thereof, putting the raw material components into a mixing machine for uniform mixing to obtain a core layer mixture, wherein the three core layer mixtures are molten, then extruding the core layer mixture from respective extruder heads, then entering different processing flow channels of a blow molding machine, introducing air into the blow molding machine to blow and expand a mold blank into a film bubble, lifting the film bubble upwards, naturally cooling the film bubble in the lifting process, and converting the film bubble into a three-layer co-extruded nylon water bag film through a necking mechanism arranged above the film after lifting;
and D, directly adopting a solvent-free composite process to carry out composite forming on the PE film, the three-layer co-extrusion nylon water bag film and the nano composite film, wherein the three-layer co-extrusion nylon water bag film is positioned between the nano composite film and the PE film, then coating polyvinyl alcohol on the surface of the PE film and the surface of the nano composite film by using a coating method, and finally soaking in sterile water for 5-8min to prepare the sterile composite roll film for seed storage.
The core layer is a three-layer co-extruded nylon water bag film, the comprehensive physical properties of the nylon water bag film are excellent, meanwhile, the surface layer mainly comprises a PE film, and the additive mainly comprises calcium carbonate, shading and ultraviolet-resistant white master batch, so that the seeds can be effectively protected from being irradiated by ultraviolet rays, and thus, the comprehensive physical properties of the composite roll film can be improved; the inner layer of the composite film is mainly a nano composite film, the nano composite film adopts nano ZnO as a raw material and konjac glucomannan as a matrix, so that the nano composite film has strong ultraviolet barrier property and antibacterial property, and the surfaces of the PET film and the nano composite film are coated with polyvinyl alcohol which has the effect of inhibiting seed germination;
therefore, the inner layer and the outer layer have high ultraviolet resistance, the core layer is mainly a three-layer co-extrusion nylon water bag film, and polyvinyl alcohol is coated on the surface of the PET film and the surface of the nano composite film; therefore, the sterile composite roll film for storing the seeds, which has high toughness and strong bacteriostatic activity and can inhibit the germination of the seeds, is achieved, and meanwhile, the production process is simple and is a simple process, so that the process cost and the efficiency are superior to those of the production process of other products.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a seed storage is with aseptic compound roll membrane which characterized in that: the sterile composite roll film for seed storage consists of a surface layer, an inner layer and a core layer positioned between the surface layer and the inner layer; bonding the surface layer, the inner layer and the core layer positioned between the surface layer and the inner layer through a solvent-free composite process to prepare the sterile composite roll film for seed storage;
the surface layer takes a PE film as a base material, polyvinyl alcohol is arranged on the surface of the PET film, and the polyvinyl alcohol is coated on the surface of the PET film by a coating method;
the core layer is a three-layer co-extrusion nylon water bag film;
the inner layer is a nano composite film, polyvinyl alcohol is arranged on the surface of the nano composite film, and the polyvinyl alcohol is coated on the surface of the PET film through a coating method.
2. The sterile composite roll film for seed storage according to claim 1, wherein: the PE film is composed of 3-5 parts of high-density polyethylene, 2-4 parts of low-density polyethylene and 1-2 parts of additives.
3. The sterile composite roll film for seed storage according to claim 2, wherein: the additive is 1-2 parts of calcium carbonate, 2-3 parts of shading and uvioresistant white master batch thereof.
4. The sterile composite roll film for seed storage and the production process thereof according to claim 1, wherein the sterile composite roll film comprises: the three-layer co-extrusion nylon water bag film is prepared from 5-8 parts of nylon, 1-3 parts of EVOH, 2-4 parts of PP, 1-2 parts of calcium carbonate and 2-3 parts of shading and anti-ultraviolet white master batch through a three-layer co-extrusion process.
5. The sterile composite roll film for seed storage according to claim 2, wherein: the PE film is composed of 5 parts of high-density polyethylene, 4 parts of low-density polyethylene and 2 parts of additives.
6. The sterile composite roll film for seed storage according to claim 4, wherein: the three-layer co-extrusion nylon water bag film is prepared from 8 parts of nylon, 3 parts of EVOH, 4 parts of PP, 2 parts of calcium carbonate and 3 parts of shading and anti-ultraviolet white master batch through a three-layer co-extrusion process.
7. The sterile composite roll film for seed storage according to claim 1, wherein: the nano composite film is prepared by adopting nano ZnO as a raw material and konjak glucomannan as a matrix through a blending method.
8. The process for producing a sterile composite roll film for seed storage according to any one of claims 1 to 7, wherein: the production process comprises the following steps:
A. selecting raw material components corresponding to the surface layer, namely components of high-density polyethylene, low-density polyethylene and additives in corresponding proportion, and uniformly mixing the raw material components in a mixer to obtain a surface layer mixture; the surface layer mixture is melted and then extruded from the head of each extruder, enters a blow molding machine, enters a processing flow channel, is lifted upwards, is naturally cooled in the lifting process, and is converted into a PE film through a closing mechanism arranged above the lifting machine;
B. the inner layer is a nano composite film, the composite film is prepared by taking nano ZnO as a raw material and konjak glucomannan as a matrix and adopting a blending method;
C. selecting raw material components corresponding to a core layer, namely components corresponding to nylon, EVOH, PP, calcium carbonate, shading and uvioresistant white master batch, uniformly mixing the raw material components in a mixing machine to obtain a core layer mixture, wherein three core layer mixtures are provided, the core layer mixture is extruded from respective extruder heads after being melted, then enters different processing flow channels of a blow molding machine, air is introduced into a blow molding machine to blow and expand a mold blank into film bubbles, the film bubbles are lifted upwards, the film bubbles are naturally cooled in the lifting process, and the film bubbles are converted into a three-layer co-extruded nylon water bag film through a closing mechanism arranged above the film bubbles after being lifted;
and D, directly adopting a solvent-free composite process to carry out composite forming on the PE film, the three-layer co-extrusion nylon water bag film and the nano composite film, wherein the three-layer co-extrusion nylon water bag film is positioned between the nano composite film and the PE film, then coating polyvinyl alcohol on the surface of the PE film and the surface of the nano composite film by using a coating method, and finally soaking in sterile water for 5-8min to prepare the sterile composite roll film for seed storage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319658.9A CN113071174A (en) | 2021-03-25 | 2021-03-25 | Sterile composite roll film for seed storage and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319658.9A CN113071174A (en) | 2021-03-25 | 2021-03-25 | Sterile composite roll film for seed storage and production process thereof |
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| CN113071174A true CN113071174A (en) | 2021-07-06 |
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| CN202110319658.9A Pending CN113071174A (en) | 2021-03-25 | 2021-03-25 | Sterile composite roll film for seed storage and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114055880A (en) * | 2021-11-17 | 2022-02-18 | 南京爱丽斯包装有限公司 | Sterile composite roll film for candy packaging and production process thereof |
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2021
- 2021-03-25 CN CN202110319658.9A patent/CN113071174A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114055880A (en) * | 2021-11-17 | 2022-02-18 | 南京爱丽斯包装有限公司 | Sterile composite roll film for candy packaging and production process thereof |
| CN114055880B (en) * | 2021-11-17 | 2022-09-02 | 南京爱丽斯包装有限公司 | Sterile composite roll film for candy packaging and production process thereof |
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Application publication date: 20210706 |