CN112373001A - High-tolerance chemical product packaging film, preparation method and double-layer packaging bag - Google Patents
High-tolerance chemical product packaging film, preparation method and double-layer packaging bag Download PDFInfo
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- CN112373001A CN112373001A CN202011123419.8A CN202011123419A CN112373001A CN 112373001 A CN112373001 A CN 112373001A CN 202011123419 A CN202011123419 A CN 202011123419A CN 112373001 A CN112373001 A CN 112373001A
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- tolerance
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- 239000000126 substance Substances 0.000 title claims abstract description 45
- 229920006280 packaging film Polymers 0.000 title claims abstract description 37
- 239000012785 packaging film Substances 0.000 title claims abstract description 37
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000010096 film blowing Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000000155 melt Substances 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 36
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 abstract description 31
- 239000012466 permeate Substances 0.000 abstract description 6
- 239000004743 Polypropylene Substances 0.000 description 29
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- 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
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
-
- 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
-
- 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
- B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
- B65D29/02—Sacks with laminated or multiple walls
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- 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
-
- 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
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a high-tolerance chemical product packaging film, a preparation method and a double-layer packaging bag; the film structure is PP/TIE/PA/TIE/PP, an infrared heating ring is arranged on a discharge channel of an extruder, a melt passes through a die head of the extruder to form a film bubble, and the film bubble passes through the infrared heating ring and a traction device to be made into a high-tolerance chemical product packaging film product; in the film blowing process, a film bubble with 2 diameters in a large mode and a small mode is formed; the film with small diameter is used as an inner bag film, and the film with large diameter is used as an outer bag film; placing the inner bag film in the outer bag film, and performing heat sealing on the opening part to form a first heat seal; and after the materials are filled in the inner bag film, the last opening is thermally sealed to form a second heat seal. The double-layer bag structure can realize better tolerance, even if the content permeates the inner bag film with a certain probability, the content can hardly permeate the outer bag film due to little permeation amount, and good chemical tolerance is realized.
Description
Technical Field
The invention relates to the technical field of packaging films, in particular to a high-tolerance packaging film for chemical products, a corresponding production method and a double-layer packaging bag made of the high-tolerance packaging film.
Background
As the chemical products have certain corrosiveness, when the chemical products are packaged, the adopted packaging film is required to have low cost and better tolerance.
At present, PP (polypropylene) can be used as an inner layer material and an outer layer material to manufacture a multilayer co-extrusion blown film; however, the film blowing processing of the PP material is difficult, the fluidity of PP particles is high in a molten state, that is, the strength of PP melt is low, and the bubble is unstable during film blowing, so that the amount of air of a film blowing air ring needs to be increased, the bubble can be rapidly cooled when the melt exits from a die, the stability of the bubble is increased, but the rapid cooling of the melt can reduce the crystallinity of the material, and the low crystallinity can influence the molecular distance and reduce the tolerance.
Therefore, a special process method needs to be established for preparing the chemical product packaging film with better tolerance based on the PP particles.
Disclosure of Invention
The invention aims to provide a high-tolerance chemical product packaging film, a preparation method and a double-layer packaging bag, so as to obtain a stable and reliable high-tolerance chemical product packaging bag.
In order to achieve the above object, a first aspect of the present invention provides a method for preparing a high-resistance chemical product packaging film, comprising the steps of:
adding PP into the extruder 1;
adding TIE into the extruder 2;
adding PA into the extruder 3;
adding TIE into the extruder 4;
adding PP into the extruder 5;
As a further improvement of the invention, the set temperature of the infrared heating ring is 180-220 ℃.
In a second aspect of the invention, a high-tolerance chemical product packaging film is provided, which is characterized by being obtained by adopting the preparation method; the thickness of the packaging film monomer is 80-120 mu m; wherein:
PP, as an outer layer material, has a thickness range of: 20-30 μm;
TIE, as a bond layer material, with a single layer thickness range: 15-20 μm;
PA, as support layer material, its thickness range is: 10-20 μm;
PP, as an inner layer material, has a thickness range of: 20 to 30 μm.
As a further improvement of the invention, the thickness of the packaging film monomer is 100 μm.
As a further improvement of the present invention,
the temperature of the extruder 1 was set to 225 ℃;
the temperature of the extruder 2 was set to 225 ℃;
the temperature of the extruder 3 is set to 250 ℃;
the temperature of the extruder 4 was set to 225 ℃;
the temperature of the extruder 5 was set to 225 ℃;
the infrared heating ring temperature was set at 220 ℃.
The invention provides a double-layer packaging bag for high-tolerance chemical products, which is characterized in that the double-layer packaging bag is formed by bag-making by adopting the high-tolerance chemical product packaging film;
a high-tolerance chemical product packaging film forms a film bubble with 2 diameters in a large film bubble and a small film bubble in a film blowing process;
taking a high-tolerance chemical product packaging film with a small diameter as an inner bag film, and taking a high-tolerance chemical product packaging film with a large diameter as an outer bag film;
placing the inner bag film in the outer bag film, and performing heat sealing on the opening part to form a first heat seal;
and after the materials are filled in the inner bag film, the last opening is thermally sealed to form a second heat seal.
When the bag is made, the heat sealing of the inner part and the outer part can be realized, and a double-layer bag, namely a bag-in-bag, is made; the double-layer bag structure can realize better tolerance, even if the content permeates the inner bag film with a certain probability, the content can hardly permeate the outer bag film due to little permeation amount, and good chemical tolerance is realized.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. the processing technology is simple, and the infrared heating ring is easy to be additionally arranged on the existing production equipment; the improvement is convenient and reliable;
2. the film structure is reliable and stable; the film has good crystallinity and better tolerance to corresponding chemicals;
3. the bag body has simple and reliable structure, low manufacturing cost and easy popularization and use.
Drawings
FIG. 1 is a schematic illustration of infrared heating according to the present invention;
FIG. 2 is a graph showing the temperature change of the film of example 1;
FIG. 3 is a graph showing the temperature change of the film of the comparative example;
fig. 4 is a schematic structural diagram of the high-tolerance chemical product packaging bag of the present invention.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
The invention provides a high-tolerance chemical product packaging film which has a structure of PP/TIE/PA/TIE/PP; the thickness is 80 to 120 μm.
The thickness is too thin or too thick, which can affect the stability of the bubble in the production process of the PP structure and cause the phenomenon of material gushing, and the total thickness is controlled to be 100um, which is a thickness easy to process through tests; less than 80um or more than 120um, and material gushing is easy to occur because the melt strength of PP is very low in the film blowing production process; wherein the content of the first and second substances,
PP, polypropylene, as outer layer material, with a thickness range of: 20-30 μm;
TIE, maleic anhydride modified polyethylene, as the bonding layer material, is arranged on both sides of the supporting layer material, and the single layer thickness range is as follows: 15-20 μm;
PA, polyamide, as support layer material, with a thickness in the range: 10-20 μm;
PP and polypropylene which are used as inner layer materials are in direct contact with chemical products, and the thickness ranges of the PP and the polypropylene are as follows: 20 to 30 μm.
The inner layer material and the outer layer material are both PP, so that heat sealing is conveniently carried out when the double-layer packaging bag is manufactured subsequently, and the same good tolerance is provided.
In order to ensure that the crystallinity of PP particles is improved in the film blowing and crystallization process, and further the integral tolerance is improved, as shown in figure 1, a group of infrared heating rings 2 are added above a film blowing head air ring 1, blown film bubbles A are synchronously heated, the blown film bubbles A are reheated and then slowly cooled, and film combination is carried out by a traction device 3 for subsequent treatment; after the device is adopted, a slow crystallization process is given to the material in the film bubble A; the intermolecular gap is reduced, and better tolerance is achieved.
Example 1: the five-layer extruder respectively corresponds to PP/TIE/PA/TIE/PP; the thickness of the film is 100 um;
adding PP into an extruder 1, and setting the temperature of the extruder 1 to 225 ℃;
adding TIE into the extruder 2, and setting the temperature of the extruder 2 to 225 ℃;
adding PA into an extruder 3, and setting the temperature of the extruder 3 to be 250 ℃;
adding TIE into the extruder 4, and setting the temperature of the extruder 4 to 225 ℃;
adding PP into an extruder 5, and setting the temperature of the extruder 5 to 225 ℃;
an infrared heating ring 2, the temperature is set to 220 ℃;
and the melt passes through the die head by an extruder to form a film bubble A, and the film bubble A passes through the infrared heating ring 2 and the traction device 3 to prepare a high-tolerance chemical product packaging film product.
The infrared heating ring 2 is used for reheating the film, the reheating can promote the crystallization of the film, the crystallization does not need accurate temperature, and the crystallization can be generated in the cooling process; the film heating is affected by the set temperature of the infrared heating ring 2, the length of the infrared heating ring 2, the running linear speed of the film and other factors, but because no specific film temperature rise requirement exists, only a connected thermal environment atmosphere needs to be formed, so that no strict requirement is provided for the length of the infrared heating ring 2 and the running linear speed of the film, and the environmental temperature is transited uniformly as far as possible.
The temperature profile of bubble a is shown in fig. 2.
Example 2: the difference from example 1 is that the infrared heating ring 2 is set at a temperature of 200 ℃;
example 3: the difference from example 1 is that the infrared heating ring 2 is set to a temperature of 180 ℃;
comparative example: the difference from embodiment 1 is that the infrared heating ring does not operate; the temperature profile of bubble a is shown in fig. 3.
And (3) carrying out film performance detection on the prepared film:
the high-tolerance chemical product packaging film prepared by the preparation method has better crystallinity and better corresponding chemical tolerance.
The double-layer chemical product packaging bag manufactured by adopting the high-tolerance chemical product packaging film has a structure shown in fig. 4, a film bubble A with 2 diameters of larger and smaller is formed in the film blowing process, and then the high-tolerance chemical product packaging film with the smaller diameter (namely, the inner bag film 4) is placed in the high-tolerance chemical product packaging film with the larger diameter (namely, the outer bag film 5), and because the outer layer material and the inner layer material of the high-tolerance chemical product packaging film are both PP materials, the inner layer and the outer layer do not need to be particularly distinguished; then, heat-sealing the opening part to form a first heat seal 6; after the contents are filled, the final opening is heat sealed to form a second heat seal 7, that is, a closed double-layer chemical product packaging bag with the contents is finally formed.
When the bag is made, the inner-inner heat sealing and the outer-inner heat sealing can be realized, and a double-layer bag (namely a bag-in-bag) is made; the double-layer bag structure can realize better tolerance, even if the content permeates the inner bag film 4 with a certain probability, the content can hardly permeate the outer bag film 5 due to little permeation amount, and good chemical tolerance is realized.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (6)
1. The preparation method of the high-tolerance chemical product packaging film is characterized by comprising the following steps:
step 1, designing a film structure, and determining that the structure is PP/TIE/PA/TIE/PP;
step 2, preparing a five-layer extruder;
adding PP into the extruder 1;
adding TIE into the extruder 2;
adding PA into the extruder 3;
adding TIE into the extruder 4;
adding PP into the extruder 5;
step 3, arranging an infrared heating ring on a discharge channel of the extruder, and starting the extruder for preheating;
step 4, starting up the production; and the melt passes through the die head by an extruder to form a film bubble, and the film bubble passes through an infrared heating ring and a traction device to be made into a high-tolerance chemical product packaging film product.
2. The method as claimed in claim 1, wherein the temperature of the infrared heating ring is set at 180-220 ℃.
3. The high-tolerance chemical product packaging film is characterized by being prepared by the preparation method according to any one of claims 1-2;
the thickness of the packaging film monomer is 80-120 mu m; wherein:
PP, as an outer layer material, has a thickness range of: 20-30 μm;
TIE, as a bond layer material, with a single layer thickness range: 15-20 μm;
PA, as support layer material, its thickness range is: 10-20 μm;
PP, as an inner layer material, has a thickness range of: 20 to 30 μm.
4. The high-resistance chemical product packaging film according to claim 3, wherein the monomer thickness of the packaging film is 100 μm.
5. The high-resistance chemical product packaging film according to claim 3, wherein the temperature of the extruder 1 is set to 225 ℃;
the temperature of the extruder 2 was set to 225 ℃;
the temperature of the extruder 3 is set to 250 ℃;
the temperature of the extruder 4 was set to 225 ℃;
the temperature of the extruder 5 was set to 225 ℃;
the infrared heating ring temperature was set at 220 ℃.
6. The high-tolerance chemical product packaging bag is characterized in that the high-tolerance chemical product packaging film is adopted and made into a bag according to any one of claims 3-5;
a high-tolerance chemical product packaging film forms a film bubble with 2 diameters in a large film bubble and a small film bubble in a film blowing process;
taking a high-tolerance chemical product packaging film with a small diameter as an inner bag film, and taking a high-tolerance chemical product packaging film with a large diameter as an outer bag film;
placing the inner bag film in the outer bag film, and performing heat sealing on the opening part to form a first heat seal;
and after the materials are filled in the inner bag film, the last opening is thermally sealed to form a second heat seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123419.8A CN112373001A (en) | 2020-10-20 | 2020-10-20 | High-tolerance chemical product packaging film, preparation method and double-layer packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123419.8A CN112373001A (en) | 2020-10-20 | 2020-10-20 | High-tolerance chemical product packaging film, preparation method and double-layer packaging bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112373001A true CN112373001A (en) | 2021-02-19 |
Family
ID=74580233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011123419.8A Pending CN112373001A (en) | 2020-10-20 | 2020-10-20 | High-tolerance chemical product packaging film, preparation method and double-layer packaging bag |
Country Status (1)
| Country | Link |
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| CN (1) | CN112373001A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10310170A (en) * | 1997-05-13 | 1998-11-24 | Dainippon Printing Co Ltd | Easily openable packaging bag |
| JP2002035084A (en) * | 2000-07-26 | 2002-02-05 | Mitsubishi Engineering Plastics Corp | Bag for medical solution made of laminated film |
| TW200607713A (en) * | 2004-08-26 | 2006-03-01 | Ruey Chang Aluminum Foil Co Ltd | Upright packing bag and method for making same |
| CN202807329U (en) * | 2012-06-27 | 2013-03-20 | 安保包装（深圳）有限公司 | Safety open type medical disinfection bag |
| CN204078357U (en) * | 2014-08-08 | 2015-01-07 | 美迪科（上海）包装材料有限公司 | Enhancement mode self-adhesion packing bag for medical use |
| CN206968110U (en) * | 2017-05-18 | 2018-02-06 | 杭州巨杰包装科技有限公司 | A kind of air column bag five-layer co-squeezing film |
| CN108248164A (en) * | 2018-01-12 | 2018-07-06 | 朝阳佛瑞达科技有限公司 | A kind of drinking water Multilayer co-extrusion packaging bag film and its production method |
| CN108621477A (en) * | 2018-05-08 | 2018-10-09 | 安徽省方舟九社包装有限公司 | A kind of technology of preparing of environment-friendly PE packaging bag |
| CN110979956A (en) * | 2019-12-11 | 2020-04-10 | 黄山永新股份有限公司 | Aseptic packaging bag for milk machine and production process thereof |
-
2020
- 2020-10-20 CN CN202011123419.8A patent/CN112373001A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10310170A (en) * | 1997-05-13 | 1998-11-24 | Dainippon Printing Co Ltd | Easily openable packaging bag |
| JP2002035084A (en) * | 2000-07-26 | 2002-02-05 | Mitsubishi Engineering Plastics Corp | Bag for medical solution made of laminated film |
| TW200607713A (en) * | 2004-08-26 | 2006-03-01 | Ruey Chang Aluminum Foil Co Ltd | Upright packing bag and method for making same |
| CN202807329U (en) * | 2012-06-27 | 2013-03-20 | 安保包装（深圳）有限公司 | Safety open type medical disinfection bag |
| CN204078357U (en) * | 2014-08-08 | 2015-01-07 | 美迪科（上海）包装材料有限公司 | Enhancement mode self-adhesion packing bag for medical use |
| CN206968110U (en) * | 2017-05-18 | 2018-02-06 | 杭州巨杰包装科技有限公司 | A kind of air column bag five-layer co-squeezing film |
| CN108248164A (en) * | 2018-01-12 | 2018-07-06 | 朝阳佛瑞达科技有限公司 | A kind of drinking water Multilayer co-extrusion packaging bag film and its production method |
| CN108621477A (en) * | 2018-05-08 | 2018-10-09 | 安徽省方舟九社包装有限公司 | A kind of technology of preparing of environment-friendly PE packaging bag |
| CN110979956A (en) * | 2019-12-11 | 2020-04-10 | 黄山永新股份有限公司 | Aseptic packaging bag for milk machine and production process thereof |
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