CN110002102B - Manufacturing method of PE composite packaging film and application of product - Google Patents
Manufacturing method of PE composite packaging film and application of product Download PDFInfo
- Publication number
- CN110002102B CN110002102B CN201910445204.9A CN201910445204A CN110002102B CN 110002102 B CN110002102 B CN 110002102B CN 201910445204 A CN201910445204 A CN 201910445204A CN 110002102 B CN110002102 B CN 110002102B
- Authority
- CN
- China
- Prior art keywords
- hdpe
- mlldpe
- lldpe
- cpp
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 239000012785 packaging film Substances 0.000 title claims abstract description 8
- 229920006280 packaging film Polymers 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 24
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 19
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 18
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 6
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 238000010096 film blowing Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 4
- 238000009459 flexible packaging Methods 0.000 claims 1
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 2
- -1 Polypropylene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
- B65D65/22—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a manufacturing method of a PE composite packaging film, which comprises an outer layer, a middle layer and an inner layer; the outer layer is formed by mixing LLDPE and MLLDPE according to a certain proportion, the middle layer is formed by mixing LLDPE, MLLDPE and HDPE with different melt flow rates according to a certain proportion, and the inner layer is formed by mixing LDPE, LLDPE, MLLDPE and HDPE with different melt flow rates according to a certain proportion. The novel material formed by the three-layer co-extrusion film blowing equipment through up-blowing not only maintains the stiffness of the CPP, but also can better resist low-temperature freezing than the CPP, and is compounded with other materials to form a composite material, so that the barrier property requirement can be met, the novel material can meet a certain stiffness requirement, and the problem that the CPP cannot resist low-temperature freezing is solved, therefore, the CPP composite material has a wide application prospect.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a manufacturing method of a PE composite packaging film and application of the PE composite packaging film.
Background
In actual production and later feedback of customers, the company finds that the material of the flexible package is made of CPP (chlorinated Polypropylene), although the CPP has good hardness, when the CPP is applied to packages requiring low-temperature frozen products, the packaging bag is easy to crack after being frozen at low temperature, and the products in the packaging bag are leaked.
Disclosure of Invention
The invention aims to solve the technical problem that the packaging bag can ensure enough hardness and can be used in a low-temperature environment.
In order to solve the technical problems, the technical scheme of the invention is that the manufacturing method of the PE composite packaging film is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1: mixing LLDPE and MLLDPE according to a proportion;
s2: blending LLDPE and MLLDPE and a first HDPE and a second HDPE in proportion, wherein the first HDPE has a melt flow rate of 1.0g/10min and the second HDPE has a melt flow rate of 0.25g/10 min;
s3: mixing LDPE, LLDPE, MLLDPE, first HDPE and second HDPE according to the proportion;
and S4, heating the mixture in the S1, the S2 and the S3 into a flow plastic shape through an extruder of a three-layer co-extrusion film blowing device respectively, and forming a new material with three-in-one outer layer, middle layer and inner layer through die blowing.
Preferably: the weight ratio of the LLDPE to the MLLDPE in step S1 is 5: 1.
Preferably: the weight ratio of the LLDPE, the MLLDPE, the first HDPE and the second HDPE in the step S2 is 3:1:1: 1.5.
Preferably: in step S3, the weight ratio of the LDPE, the LLDPE, the MLLDPE, the first HDPE, and the second HDPE is 2:1:1:1: 1.5.
The new material of the invention is applied to flexible packages.
Compared with the existing material, the invention has the following advantages: 1. the stiffness of the CPP can be achieved, the low-temperature freezing resistance requirement of the CPP can be achieved, and the CPP can completely replace the existing CPP material;
2. the new material can be used for packaging low-temperature freezing materials, and the loss of the materials caused by the rupture of the packaging bag is avoided.
Detailed Description
In order that the invention may be more readily understood, specific embodiments thereof will be described further below.
Example 1
S1: mixing LLDPE and MLLDPE according to the proportion, and heating to flow plastic;
s2: mixing LLDPE, MLLDPE and HDPE with two different melt flow rates according to the proportion, and heating to flow plastic;
s3: mixing LDPE, LLDPE, MLLDPE and HDPE with two different melt flow rates according to the proportion, and heating to be in a flow plastic shape, wherein the temperature is 200 ℃;
and S4, connecting the mixture in the flow molding states of S1, S2 and S3 with an extruder of a three-layer co-extrusion film blowing machine to blow a film to form a new three-in-one material, wherein the material preparation is simple and convenient to realize on one hand, and on the other hand, the three layers are used for the co-extrusion film blowing machine to ensure that the mixture in the S1, the mixture in the S2 and the mixture in the S3 have high heat sealing efficiency and good heat sealing effect, so that the material deformation is avoided, and the service life of the material is prolonged.
The test data are as follows:
the low temperature resistance of the packaging bags made of the two materials of PA/CPP (traditional material) and PA/PE (present material) is tested by referring to standard QB/10004-2008, and specific test data are shown in the following table.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (2)
1. A manufacturing method of a PE composite packaging film is characterized by comprising the following steps: comprising the following steps, S1: mixing LLDPE and MLLDPE in proportion to obtain a mixture 1, wherein the weight ratio of the LLDPE to the MLLDPE is 5: 1;
s2: mixing LLDPE and MLLDPE, and a first HDPE and a second HDPE according to a proportion, wherein the melt flow rate of the first HDPE is 1.0g/10min, the melt flow rate of the second HDPE is 0.25g/10min, and the weight ratio of the LLDPE, the MLLDPE, the first HDPE and the second HDPE is 3:1:1: 1.5;
s3: mixing LDPE, LLDPE, MLLDPE, first HDPE and second HDPE according to a proportion, wherein the weight ratio of the LDPE, the LLDPE, the MLLDPE, the first HDPE and the second HDPE is 2:1:1:1: 1.5;
and S4, heating the mixture in the S1, the S2 and the S3 into a flow plastic shape through an extruder of a three-layer co-extrusion film blowing device respectively, and forming a new material with three-in-one outer layer, middle layer and inner layer through die blowing.
2. The PE composite packaging film of claim 1 applied in flexible packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445204.9A CN110002102B (en) | 2019-05-27 | 2019-05-27 | Manufacturing method of PE composite packaging film and application of product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445204.9A CN110002102B (en) | 2019-05-27 | 2019-05-27 | Manufacturing method of PE composite packaging film and application of product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110002102A CN110002102A (en) | 2019-07-12 |
| CN110002102B true CN110002102B (en) | 2020-10-30 |
Family
ID=67177832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910445204.9A Active CN110002102B (en) | 2019-05-27 | 2019-05-27 | Manufacturing method of PE composite packaging film and application of product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110002102B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116728930B (en) * | 2023-06-21 | 2024-03-29 | 青岛泰博聚合标签有限公司 | High-transparency polyethylene heat-shrinkable film and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179985A (en) * | 2011-03-18 | 2011-09-14 | 黄山永新股份有限公司 | Polyethylene (PE) film and preparation method thereof |
| CN104476889A (en) * | 2015-01-16 | 2015-04-01 | 永新股份（黄山）包装有限公司 | PE film and preparation method thereof |
| WO2017119005A1 (en) * | 2016-01-07 | 2017-07-13 | Essel Propack Limited | Laminate for vignette and tonal image printing |
| WO2017139884A1 (en) * | 2016-02-15 | 2017-08-24 | Macro Technology Inc. | Multilayer barrier film |
| CN108995336A (en) * | 2018-06-25 | 2018-12-14 | 青岛东海包装产业有限公司 | Print compound polyethylene film and preparation method thereof |
| CN109291592A (en) * | 2018-11-09 | 2019-02-01 | 江苏科默斯包装材料有限公司 | A kind of packaging film and thereon blowing production technique |
| CN109397820A (en) * | 2018-10-30 | 2019-03-01 | 大连巨通塑料制品有限公司 | A kind of composite membrane containing EAA, LDPE and LLDPE, preparation method and application |
-
2019
- 2019-05-27 CN CN201910445204.9A patent/CN110002102B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179985A (en) * | 2011-03-18 | 2011-09-14 | 黄山永新股份有限公司 | Polyethylene (PE) film and preparation method thereof |
| CN104476889A (en) * | 2015-01-16 | 2015-04-01 | 永新股份（黄山）包装有限公司 | PE film and preparation method thereof |
| WO2017119005A1 (en) * | 2016-01-07 | 2017-07-13 | Essel Propack Limited | Laminate for vignette and tonal image printing |
| WO2017139884A1 (en) * | 2016-02-15 | 2017-08-24 | Macro Technology Inc. | Multilayer barrier film |
| CN108995336A (en) * | 2018-06-25 | 2018-12-14 | 青岛东海包装产业有限公司 | Print compound polyethylene film and preparation method thereof |
| CN109397820A (en) * | 2018-10-30 | 2019-03-01 | 大连巨通塑料制品有限公司 | A kind of composite membrane containing EAA, LDPE and LLDPE, preparation method and application |
| CN109291592A (en) * | 2018-11-09 | 2019-02-01 | 江苏科默斯包装材料有限公司 | A kind of packaging film and thereon blowing production technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110002102A (en) | 2019-07-12 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Preparation method of a PE composite packaging film and application of the product Effective date of registration: 20221115 Granted publication date: 20201030 Pledgee: Bank of China Co.,Ltd. Anqing Branch Pledgor: GOLDEN TECHNOLOGY PRINTING Co.,Ltd. ANHUI PROVINCE Registration number: Y2022340000037 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231102 Granted publication date: 20201030 Pledgee: Bank of China Co.,Ltd. Anqing Branch Pledgor: GOLDEN TECHNOLOGY PRINTING Co.,Ltd. ANHUI PROVINCE Registration number: Y2022340000037 |