CN111016370A - Silage packaging film and preparation method thereof - Google Patents
Silage packaging film and preparation method thereof Download PDFInfo
- Publication number
- CN111016370A CN111016370A CN201911350119.0A CN201911350119A CN111016370A CN 111016370 A CN111016370 A CN 111016370A CN 201911350119 A CN201911350119 A CN 201911350119A CN 111016370 A CN111016370 A CN 111016370A
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- China
- Prior art keywords
- film
- layer film
- silage
- master batch
- packaging
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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
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- 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
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
-
- 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
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J2423/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08J2423/22—Copolymers of isobutene; butyl rubber
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a silage packaging film and a preparation method thereof, wherein the silage packaging film comprises an upper film, a middle film and a lower film which are adhered together in sequence, wherein the upper film comprises the following components: 10% -50% of linear low-density polyethylene and 25% -85% of metallocene; the middle layer film comprises the following components: 20% -60% of linear low-density polyethylene and 25% -85% of metallocene; the lower layer film comprises the following components: 10% -50% of linear low-density polyethylene, 25% -85% of metallocene and 1% -5% of propenyl elastomer; the packaging film is provided with the upper layer film, the middle layer film and the lower layer film and is prepared from the components, so that the puncture resistance, the fracture resistance and the tensile failure resistance of the packaging film can be enhanced, and the strength and the toughness of the packaging film are improved.
Description
Technical Field
The invention relates to the technical field of packaging films, in particular to a packaging film for silage and a preparation method thereof.
Background
The silage is prepared by hermetically packaging plant feed containing much water by a packaging film and fermenting in the storage process, and is mainly used for feeding ruminants. The silage is more storage-resistant than fresh feed, and has more nutrient components than dry feed.
However, in the process of hermetically packaging the plant feed with the packaging film, it has been found that the plant feed contains a large amount of sharp straws, the packaging film has low strength and poor toughness, and the packaging film is very likely to break, which affects storage of the plant feed and even causes spoilage of the plant feed.
In view of the above, the present inventors have made extensive studies and research on various defects and inconveniences caused by the above-mentioned incomplete design of the packaging film.
Disclosure of Invention
The invention aims to provide a silage packaging film with high strength and high toughness and a preparation method thereof.
In order to achieve the above purpose, the solution of the invention is:
a silage packaging film, which comprises an upper film, a middle film and a lower film which are adhered together in sequence, wherein the upper film comprises the following components: 10% -50% of linear low-density polyethylene and 25% -85% of metallocene; the middle layer film comprises the following components: 20% -60% of linear low-density polyethylene and 25% -85% of metallocene; the lower layer film comprises the following components: 10% -50% of linear low-density polyethylene, 25% -85% of metallocene and 1% -5% of propenyl elastomer.
The components of the upper layer film, the middle layer film and the lower layer film also comprise 0.5-6% of anti-aging master batch.
The middle layer film also comprises 3-10% of color master batch.
The color master batch comprises a green master batch and a white master batch.
The upper layer film and the lower layer film both comprise 0.5-5% of ethylene-vinyl acetate copolymer.
The components of the upper layer film, the middle layer film and the lower layer film also comprise 0.1-3% of polyphthalamide.
The lower layer film also comprises 3% -10% of tackifying master batch.
The tackifying master batch is polyisobutylene.
A preparation method of a packaging film of silage, which comprises the following steps:
step one, uniformly mixing the components of the upper layer film and the middle layer film respectively to obtain an upper film material, a middle film material and a lower film material respectively;
secondly, respectively placing the upper film material, the middle film material and the lower film material in hoppers of three extrusion units in a three-layer co-extrusion blow molding machine;
and step three, simultaneously starting three extrusion units in the three-layer co-extrusion blow molding machine, and blowing each extrusion unit and the mold film tube to form a three-layer co-extruded packaging film.
After the scheme is adopted, the content of the linear low-density polyethylene of the upper layer film and the lower layer film is set to be 10% -50%, the content of the linear low-density polyethylene of the middle layer film is set to be 20% -60%, the content of the metallocene of the upper layer film, the middle layer film and the lower layer film is set to be 25% -85%, and 1% -5% of the propenyl elastomer is added into the lower layer film, so that the puncture resistance, the fracture resistance and the tensile failure resistance of the packaging film can be enhanced, and the strength and the toughness of the packaging film are improved.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
The invention discloses a preferable embodiment of a packaging film of silage, which comprises an upper film, a middle film and a lower film which are adhered together in sequence, wherein the upper film comprises the following components: 10% -50% of linear low-density polyethylene and 25% -85% of metallocene; the middle layer film comprises the following components: 20% -60% of linear low-density polyethylene and 25% -85% of metallocene; the lower layer film comprises the following components: 10% -50% of linear low-density polyethylene, 25% -85% of metallocene and 1% -5% of propenyl elastomer.
After comparison of multiple groups of test data, the packaging film prepared by the structure and the components has the longitudinal tensile breaking strength of more than or equal to 30MPa, the longitudinal tensile breaking elongation of more than or equal to 450 percent, the transverse tensile breaking strength of more than or equal to 25MPa, the transverse tensile breaking elongation of more than or equal to 600 percent, the puncture rupture resistance of more than or equal to 25N, the puncture rupture elongation of less than or equal to 100mm and better tensile breaking strength and puncture rupture resistance than the packaging film with the same thickness when the thickness is 20 microns. Therefore, the content of the linear low density polyethylene of the upper layer film and the lower layer film is set to be 10% -50%, the content of the linear low density polyethylene of the middle layer film is set to be 20% -60%, the content of the metallocene of the upper layer film, the middle layer film and the lower layer film is set to be 25% -85%, and 1% -5% of the propylene-based elastomer is added into the lower layer film, so that the puncture resistance, the fracture resistance and the tensile failure resistance of the packaging film can be enhanced, and the strength and the toughness of the packaging film are improved.
The components of the upper layer film, the middle layer film and the lower layer film also comprise 0.5 to 6 percent of anti-aging master batch. By adding the anti-aging master batch, the packaging film can be prevented from being rapidly aged under outdoor natural illumination conditions.
The composition of the middle layer film also comprises 3-10% of color master batch. In this embodiment, the color masterbatch includes a green masterbatch and a white masterbatch. By adding the color master batch, the light transmittance of the packaging film can be reduced, and the influence of direct irradiation of natural light on the life activity of microorganisms in the packaging film is avoided.
The upper film and the lower film also comprise 0.5-5% of ethylene-vinyl acetate copolymer. The ethylene-vinyl acetate copolymer is arranged, so that the cold resistance, the cracking resistance and the impact resistance of the packaging film can be enhanced, and the packaging film can be suitable for various severe climates.
The components of the upper layer film, the middle layer film and the lower layer film also comprise 0.1 to 3 percent of polyphthalamide. Through being equipped with polyphthalamide, can make the preparation process of packaging film more stable, the membrane surface is more level and smooth, the no crystalline point to improve the quality of packaging film.
The lower layer film also comprises 3-10% of tackifying master batch. In this example, the tackifying master batch was polyisobutylene. Through being equipped with the tackification master batch for the bottom surface of packaging film has viscidity, can be from gluing on the surface on the packaging film after the packaging film packing, thereby plays self-adhesion, not loosen the effect.
A preparation method of a packaging film of silage, which comprises the following steps:
step one, respectively and uniformly mixing the components of the upper layer film and the lower layer film of the middle layer according to the proportion of the embodiment to respectively obtain an upper film material, a middle film material and a lower film material;
secondly, respectively placing the upper film material, the middle film material and the lower film material in hoppers of three extrusion units in a three-layer co-extrusion blow molding machine;
and step three, simultaneously starting three extrusion units in the three-layer co-extrusion blow molding machine, and blowing each extrusion unit and the mold film tube to form a three-layer co-extruded packaging film.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as may be appropriate to those skilled in the art without departing from the scope of the invention.
Claims (9)
1. A silage packaging film, which is characterized in that: the film comprises an upper layer film, a middle layer film and a lower layer film which are adhered together in sequence, wherein the upper layer film comprises the following components: 10% -50% of linear low-density polyethylene and 25% -85% of metallocene; the middle layer film comprises the following components: 20% -60% of linear low-density polyethylene and 25% -85% of metallocene; the lower layer film comprises the following components: 10% -50% of linear low-density polyethylene, 25% -85% of metallocene and 1% -5% of propenyl elastomer.
2. The silage film of claim 1, wherein: the components of the upper layer film, the middle layer film and the lower layer film also comprise 0.5-6% of anti-aging master batch.
3. The silage film of claim 1, wherein: the middle layer film also comprises 3-10% of color master batch.
4. A silage packaging film as claimed in claim 3, wherein: the color master batch comprises a green master batch and a white master batch.
5. The silage film of claim 1, wherein: the upper layer film and the lower layer film both comprise 0.5-5% of ethylene-vinyl acetate copolymer.
6. The silage film of claim 1, wherein: the components of the upper layer film, the middle layer film and the lower layer film also comprise 0.1-3% of polyphthalamide.
7. The silage film of claim 1, wherein: the lower layer film also comprises 3% -10% of tackifying master batch.
8. The silage film of claim 7, wherein: the tackifying master batch is polyisobutylene.
9. A method for producing a silage packaging film according to any one of claims 1 to 8, characterized in that: which comprises the following steps:
step one, uniformly mixing the components of the upper layer film and the middle layer film respectively to obtain an upper film material, a middle film material and a lower film material respectively;
secondly, respectively placing the upper film material, the middle film material and the lower film material in hoppers of three extrusion units in a three-layer co-extrusion blow molding machine;
and step three, simultaneously starting three extrusion units in the three-layer co-extrusion blow molding machine, and blowing each extrusion unit and the mold film tube to form a three-layer co-extruded packaging film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350119.0A CN111016370A (en) | 2019-12-24 | 2019-12-24 | Silage packaging film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350119.0A CN111016370A (en) | 2019-12-24 | 2019-12-24 | Silage packaging film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111016370A true CN111016370A (en) | 2020-04-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911350119.0A Withdrawn CN111016370A (en) | 2019-12-24 | 2019-12-24 | Silage packaging film and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111016370A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716753A (en) * | 2022-05-12 | 2022-07-08 | 宁波鸿雁包装材料有限公司 | Plastic steel packaging film and preparation method thereof |
| CN114889275A (en) * | 2022-04-06 | 2022-08-12 | 珠海市德燊环保包装有限公司 | Thinned PE film and preparation method thereof |
| CN118560134A (en) * | 2024-08-01 | 2024-08-30 | 山东旭喜新材料科技有限公司 | Ultralow temperature resistant polyolefin packaging film, preparation method thereof and packaging bag |
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| CN104095167A (en) * | 2014-06-19 | 2014-10-15 | 安徽精良美瑞塑膜科技股份有限公司 | Film special for grass silage |
| CN104369500A (en) * | 2014-12-02 | 2015-02-25 | 东阿奥瑞塑业有限公司 | Forage grass film and manufacturing method thereof |
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| CN107128045A (en) * | 2017-04-24 | 2017-09-05 | 新昌县瑞森农产品有限公司 | A kind of new Grass Silage Films |
| CN107573572A (en) * | 2017-08-31 | 2018-01-12 | 杨凌福祥塑业有限公司 | A kind of antifreeze moisturizing bagging of treelet seedling and preparation method thereof |
| CN109016761A (en) * | 2018-08-10 | 2018-12-18 | 顺丰速运有限公司 | Plastic foil and courier bag |
| CN109438801A (en) * | 2018-09-26 | 2019-03-08 | 天津泽恒包装制品有限公司 | A kind of formula of herbage film composite master batch |
| CN109605890A (en) * | 2019-01-21 | 2019-04-12 | 河南省银丰塑料有限公司 | Three-layer co-extruded ultra-low temperature heat sealing packing film |
-
2019
- 2019-12-24 CN CN201911350119.0A patent/CN111016370A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104095167A (en) * | 2014-06-19 | 2014-10-15 | 安徽精良美瑞塑膜科技股份有限公司 | Film special for grass silage |
| CN104369500A (en) * | 2014-12-02 | 2015-02-25 | 东阿奥瑞塑业有限公司 | Forage grass film and manufacturing method thereof |
| CN204506025U (en) * | 2014-12-02 | 2015-07-29 | 东阿奥瑞塑业有限公司 | Herbage film |
| CN106965510A (en) * | 2017-03-24 | 2017-07-21 | 常州高创塑业有限公司 | A kind of three-layer co-extruded grass silage dedicated film and preparation method thereof |
| CN107128045A (en) * | 2017-04-24 | 2017-09-05 | 新昌县瑞森农产品有限公司 | A kind of new Grass Silage Films |
| CN107573572A (en) * | 2017-08-31 | 2018-01-12 | 杨凌福祥塑业有限公司 | A kind of antifreeze moisturizing bagging of treelet seedling and preparation method thereof |
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| CN109605890A (en) * | 2019-01-21 | 2019-04-12 | 河南省银丰塑料有限公司 | Three-layer co-extruded ultra-low temperature heat sealing packing film |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889275A (en) * | 2022-04-06 | 2022-08-12 | 珠海市德燊环保包装有限公司 | Thinned PE film and preparation method thereof |
| CN114716753A (en) * | 2022-05-12 | 2022-07-08 | 宁波鸿雁包装材料有限公司 | Plastic steel packaging film and preparation method thereof |
| CN118560134A (en) * | 2024-08-01 | 2024-08-30 | 山东旭喜新材料科技有限公司 | Ultralow temperature resistant polyolefin packaging film, preparation method thereof and packaging bag |
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Application publication date: 20200417 |